For me I had a massive data point from September because of Irma causing me to not have an internet signal the 4 days when I usually PIF my cards before statement cut. So instead of PIF, 3 of my 6 cards reported over 90% instead of $0.
As you can see, my AZEO FICO on August 26 was 660. Then I went out to sea on a sailing expedition that should have lasted 5-6 days but ended up around 10-11 days so I missed ALL of my statement cuts while at sea. So I went from AZEO ($50 balance on one card) to 3 cards maxed out (93-95%) and one card with a balance over 9%. I had 6 cards total, 4 reported balances. My score dropped from 660 on 8/26 down to 616 on 9/15 when my last balance updated. 44 point slaughter. The thing is, my report also had an unpaid collection reporting from January of this year, so if you have a clean profile, it's feasible your maxed cards may hurt you even more.
On 9/21, one of my maxed out cards re-reported to $0 because it's a Chase card so they updated midcycle. My score went up 10 points to 626 so of the 44 point drop, I reclaimed 10. On 10/5 my score went up another 6 points to 632 because my card reporting more than 9% was PIFd. On 10/7 another maxed out card showed PIF so score went up 15 points to 647. Then on 10/12 another PIF card was reported so I went up 11 points to 658 -- which is about where I started.
On 10/15, my unpaid collection dropped off for no reason, so my score shot up another 56 points from that, so ignore everything yellow as it doesn't fit the data points for the prior month.
Basically, here are the data points:
- AZEO = 660
- One card out of 6 maxed out plus one small balance = 17 point drop total
- Two cards out of 6 maxed out plus one small balance = 33 point drop total
- Three cards out of 6 maxed out plus one small balance = 44 point drop total
I bet if I had a totally clean profile, the point drops would be FAR worse but that's just conjecture as I won't test it out again and now I will PIF all my cards BEFORE going sailing again, lolol
I also have this belief that the NUMBER of credit cards maxed out based on your TOTAL number of credit cards probably has some effect on how many points are lost. Meaning if you maxed out 1 card and had 19 other cards at $0, it might probably affect your scores less than you have you have 1 maxed out card and 2 others at $0. I have no idea, not enough people share these data points for me to calculate it unfortunately. But if I have 6 cards and the "total maxed out penalty" is 100 points, then 16 points per card is probably likely. So 6 cards x 16 points = 96 possible points, seems probably correct. It's actually 16.666 for 6 cards, so 1 card = 17, 2 cards = 33, 3 cards = 50...Pretty darned close.
...and then you get things like what happened to me today, reporting on my myFICO. Experian knocked me down 27pts for DECREASING my C1V1 balance by $700 and going from 49 to 14% util. Good thing those bastards don't know it's actually paid off and sitting at $3 instead of $299. They'd probably take another 20pts. Rediculous.
Really only goes to show that much of the scoring system is seemingly completely random, arbitrary and composed in good part, of equine by-product
WOW ABCD2199 
That was pretty freak AWESOME what you just told me and thanks so much for the insight! Last month, as I only have 2 cc's but did max out as well as I said before, I travel a lot, and do it for work and pleasure. So my point dropped a ugly 32 point for 1 CARD! 
Then the other card I have, i ran that up to useage of 75%. So all together, my point went dow a good 56 point al together. From what you told me and from what I gathered i would guess somewhere around 50 to 60 some point as I have gotten back 33 already as my statement and score updated. Now to wait at the end of this month to see what happen when this last card I have will be PIF.
That was pretty freak AWESOME what you just told me and thanks so much for the insight! Last month, as I only have 2 cc's but did max out as well as I said before, I travel a lot, and do it for work and pleasure. So my point dropped a ugly 32 point for 1 CARD!
Then the other card I have, i ran that up to useage of 75%. So all together, my point went dow a good 56 point al together. From what you told me and from what I gathered i would guess somewhere around 50 to 60 some point as I have gotten back 33 already as my statement and score updated. Now to wait at the end of this month to see what happen when this last card I have will be PIF.
@Anonymous wrote:WOW ABCD2199
That was pretty freak AWESOME what you just told me and thanks so much for the insight! Last month, as I only have 2 cc's but did max out as well as I said before, I travel a lot, and do it for work and pleasure. So my point dropped a ugly 32 point for 1 CARD!
Then the other card I have, i ran that up to useage of 75%. So all together, my point went dow a good 56 point al together. From what you told me and from what I gathered i would guess somewhere around 50 to 60 some point as I have gotten back 33 already as my statement and score updated. Now to wait at the end of this month to see what happen when this last card I have will be PIF.
I wish I knew you in person so we could sit down and put that data in! I'm just throwing darts right now but your data helps.
Let's assume that you have a total of 100 points possible. If one card is maxed out (over 89% usage) that's 50 points gone. If the other card is between 69% and 89%, maybe that's 80% loss (40 points). But you say you feel you lost 60 points, so my math estimate is obviously incorrect, lol. Still, it's obvious that both your credit cards reporting balances is hurting you MASSIVELY.
Please do note that FICO "allows" you to get 3 credit cards without the "new account" penalty hitting very hard. So once you get one card to $0 and the other card reporting between $5 and 8% utilization, your scores should be high enough for you to get a third card and you'll get some magical FICO points for going from 2 to 3 cards. Post here for card ideas before applying of course but I bet your scores will look gorgeous in 6-7 months if you have 3 cards reporting.
FICO actually prefers seeing 5 cards total (or more) but cards #4 and #5 will penalize you with the "new account penalty" for 6 months of aging. So get to 3 cards first, and after they age a bit, get cards 4 and 5 and 6 months later, you'll really have a nice FICO score -- if you manage your utilization well. During a rebuild, you really shouldn't carry a balance because that means you're building debt, not building great credit. Never build debt. Better to go without TV and Netflix than carry a balance during a rebuild!