Your percentile is 70.08.
According to this percentile your overall rank will be in the range of 306082 - 344080.

Even if we talk about your chances to get a seat in NITs, IIITS, are tough though.

But still you are having one more chance to score better now. so study hard, give your best.

You can check some preparation articles from Careers360 https://engineering.careers360.com/articles/how-prepare-for-jee-main

All The Best.