Hello Sarath,

Hope you are doing well.

So to get a call from IIMs, you must score 99-100 percentile in CAT. Then, only you can receive call from any of the IIMs, if you had good academic background, you might have received the call at 95 percentile also, but that too not from the best one's.

And for IITs like IIT-ISM Dhanbad or IIT Kanpur, You need to score above 90 percentile in CAT.

So, All the best !

Hope I was helpful.

Thank-you