Hi Mahek. Looking upon your past records it seems like to get admission in iim's you need to score atleast 98+ percentile.
For IIM Ahmedabad you surely need to get a 99+ percentile.
IIM Ahmedabad also marks the students out of 45 which is completely based upon their academic performance of class 10th, 12th and graduation marks. In this you may score a little less. So I suggest you that having a 99 + percentile could prove to be an advantage.

So study well and all the best for your future.

Hope it helps.