Hi,

I hope you are doing well.

In order to get the FMS you should be good with your 10 & 12 percent.

Don't focus more on that just do bring 99+% in CAT you will selected in FMS because they didn't see your work experience. They will just see 10% weightage of 10 & 12(5%-5% both).

First know that your past academics won't affect your chances. The breakup for final shortlist is 85% for CAT score, 10% Interview, 5% Extempore.

Now, You need at least 98+ %ile with a good verbal percentile to get a call from FMS, let alone converting. Verbal because they have different weightage for different sections. This year it is 40:30:30 for VARC: DILR: QA respectively. For Converting the call it is difficult for a percentile less than 99.

If you are a OBC-NC candidate, a score of 96+ %le would be a good score to begin with.

I hope this helps.