can I get iiit bangalore for 150 marks 98.6 percentile which branch I can expect
No, I believe With a Percentile of 98.6 in JEE Main, you'll not be able to secure a seat in IIIT Bangalore in either Integrated MTech in CSE or ECE. The Cutoff for 2020 for Integrated MTech CSE was 7.3k Rank, whereas for MTech ECE was 9k. With a Percentile of 98.6, your Rank will be anywhere between 14-17k.