Hello!!

The eligibility criteria for entrance in IIMs varies for every IIM. They give weightage on the basis or Personal Interview, CAT score, WAT, Work experience, Bachelors degree and Academic marks. These weightage scores are different for every IIM. The minimum percentage of your acadamics will also be required on the basis of the weightage ascertained in respective IIMs.

For detailed understanding follow the link provided below

https://www.google.com/amp/s/bschool.careers360.com/articles/iim-admission-criteria/amp

Thank you