Hey Rahul.

See the percentile u have got is far below the cut off percentile that is 89% for GEN category. So u will not be eligible to write the JEE ADVANCED exam for pursuing ur btech career from the IITs under btech courses. With this percentile u won't be able to secure a seat in the NITs , IIITs and GFTIs too. U should be going for state colleges and private institutions for ur btwch career.

Hope u got my point. Ask if any query.

Good luck