Hello Aspirant,

Your 10th and 12th percentages are more than good for IIMs. According to  the eligibility criteria as you have scored , more than 90% in 10th  , your chances to get an interview call will be higher, provided you have a very good percentile in CAT exam.Note that your graduation marks will also matter hence try to score around 80-90% in it. Also securing top percentile will not assure you IIM seat, the  top CAT score will make you eligible for Written Test/Group Discussion and Personal Interview (PI) based on which you will be selected for MBA. The cutoff requirements will vary based on your reservation category.For other top IIMs too it will be more or less the same. You should aim for a minimum of 95-97 percentile to even stand a chance. So prepare well for CAT exam .

https://bschool.careers360.com/articles/cat-cutoff

https://bschool.careers360.com/articles/iim-cutoff

All the best