With a JEE Main percentile of 84.99 and belonging to the OBC-NCL category , your approximate All India Rank (AIR) would be around 76,491 .
Securing a seat in any of these branches at IIIT Nagpur would be highly unlikely .

• Consider applying to other IIITs .
• Look into private engineering colleges that accept JEE Main scores.
• Some state engineering colleges might have different admission criteria or lower closing ranks.

For detailed information, you may refer to:
IIIT Nagpur JEE Main Cutoff & Admission Details – Careers360