Gem 10th-9.4 cgpa, 12 th-73%,Btech-66% Cat overall percentile -97 90+ in all sectionals From where can I get call
This is difficult to predict.
Your marks are safe enough to ensure that you get a call from most of the new IIM's and several other good colleges as well.
However,it eventually depends on the college as to what cutoff it puts in.Also,several other factors as well.However,this doesn't overshadow the fact that with such a performance,you will definitely get a call from most of the colleges I have already mentioned.
Best of luck.
Hope this helps.