Hi...

Congrats for the very good percentile in CAT.

As you are an Engineer you will not get calls from the top most IIMs which are IIM Ahmadabad,Bangalore and Culcutta.

The IIMA requires  percentile above 99.7, for IIMC it is 99.68, and for IIMB it is 99.55.The expected cut offs for the three colleges is always above 99 percentile.

Other than these three IIMs there are high chances of getting calls from the other IIMs as you even have the work experience too.

The expected cut off for the IIMs for this year are:

IIM Ahmedabad - 99+

IIM bangaloe- 99+

IIM Calcutta-99+

IIM Lucknow-98+

IIM Indore-97+

IIM Kozhikode-97+

IIM Amritsar- 96+

IIM Nagpur- 96+

IIM Sambalpur - 95+

IIM Trichy- 94+

IIM Raipur- 95+

IIM Kashipur-95+

IIM Vizag- 92+

IIM Udaipur- 92+

IIM Bodhgaya-92+

IIM Shilong- 90+

IIM Srimaur-90+

There is nothing like all candidates getting  99+ percentile get calls from A,B,C  IIMs. Your grades even in 10th and 12th matters which are quite good. The cut offs may slightly varies depending on the percentile scored by the students and their working experience, UG background and many other factors.

Best luck