Hey Abhishek, Congratulations on scoring 89 percentile in JEE MAINS and you also belong to OBC Category. Really that will be very helpful to you while taking admission in Government Funding Technical Institute (GFTI) as some special seats are being reserved for each and every special reserved category. With this percentile, you can get a seat in NIT but there are very fewer chances of being getting admission there due to high cutoffs this year. You can even see the last year JOSSA Lists and can see the last rank according to you. First, see the NIT in your state as you will be able to get a seat there easily and then see in other states. You can get lower NITs very easily and even try other branches at these marks in very good NITs. You can even try for some good universities like Islamia University in Delhi which is really the best and you will be getting worth it. You can get a seat easily there. I would rather suggest you check the list of colleges that are available for you at this rank and you can check that at JEE MAINS College predictor. It will be really helpful as it will show you according to your category and home state. 

https://engineering.careers360.com/jee-main-college-predictor?icn=jee-main-clgpd_landing-page&ici=prediction-section_c360-home