Confused on my recent credit Score Updates

[Anonymous]

So over the past month, I've been working on paying down all my debt and get it below 10% as I thought this would help raise my credit scores. I am currently at 8%, Down from 17%. Now I just get an update that my Experian score dropped -11 points and my Transunion dropped -7 points. I currently only have one card with a balance, all the others are at 0. I also received credit increases on 2 of my accounts, which I would have thought would have also helped raise my credit score as it helped to decrease my current available credit usage. Please help me understand and what I am doing wrong. Thanks

[Slabenstein]

We would need more information to help you determine the likely cause of your score drop, but it would not have been due to decreasing utilization.  Can you answer the following:

1) Are any of your cards that are currently $0 AU accounts?

2) Is your one card that currently has a balance also reporting a balance?

3) Are you on a clean scorecard and, if so, how old is your oldest account?

4) Have any closed accounts fallen off of your reports?

5) Were any of your CLIs HP?

ETA: Also, can you confirm that you are looking at FICO, not Vantage scores?