You would need 99.8+ percentile and still get calls from only 2 - 3 (old) IIMs at most.
SSC: 87% (AP Board)
HSC: 85% (AP Board)
B.Tech: Around 75% (JNTU)
Can this performance of mine get me a call from the top IIMs if I get a dignified(sorry for being too much optimistic) score in CAT? If not what chances do I have in other well known institutes such as SP Jain, IIFT etc.