Profile review

I am a GEM candidate from old IIT.
10th CBSE 93%
12th CBSE 89.6%
B.Tech 85%
Work ex 25 months as on 31st July 2026, left the job after 27 months work-ex in a PSU job working on a high profile $2Billion project
Research Internship in a good foreign university

Already got 99%ile each in last two mid serious attempts.
Kindly advise the safe percentile for top IIMs and FMS. As well as the %ile that will guarantee a seat in BLACKI provided an average interview.