Can I get a call from IIM Ahmedabad if I have 87.5 percent in 10th, 95 percent in 12th and I am IITian with a 9 CGPA?

If you are a general (or even an OBC) candidate, with 87.5 in 10th, 95 percent in 12th, and a CGPA of 9, you at least need 99.5+ percentile. 

If you are an SC category student, you can get a call from IIM Ahmedabad with 85+ percentile. For ST, it goes to the 70+ percentile. 

But considering you are a general engineer male student, there is no chance of you getting a call at this profile. You need to appear for CAT next year with a better CAT score. Suppose you are targeting BLACKI institutes. 

For Bangalore, you need to score 99.9+. For Lucknow, you need to score 99.6+. For Ahmedabad, you need to score 99.8+. For Calcutta, you need to score 99.7+. For Kozhikode, you need to score 99.5+. For Indore, you need to score 99.3+ in the CAT exam to get an admission call.