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Everyone is going to have different results, depending on the remainder of their credit factors (AAoA, lates reporting, etc.)
Largest jump I have personally seen was from someone going from 52% to 1%, and the jump was roughly 75 points. Utilization is by far the best way to bump your score in a quick way. If your account is littered with major derogs, then your score may be held down much further and utilization won't help as much.
I did this back at the end of 2014 beginning of 2015 to prepare for some loan refinances. My reported Util was around 90% (depending on what week and who had reported) and my scores were right around 680-690. Once I dropped my Util to 1% and only on one line my scores jumped to 780 + by February, started monitoring reported Util in December.
Added new CL's, got a few CLI's so now my Util is around 10% with full balances reporting each month and my score stays in the 750 range (after adding 9 accounts this year). Still PIF on anything that has interest, just have much better CL's so I can show balances and not get hit as hard.