Hello Aspirant. You have mentioned you are belong to ST category and your home state is Assam. Based on your percentile, your CRL-AIR may end up somewhere around 235290 - 264500. As per your percentile as well as previous years' cutoff trends, you have a good chance to get a seat in both CSE and ECE at IIIT, Guwahati as well as you may get chance to get admission in ECE at IIIT Delhi - Indraprastha . In 2019, JEE Main Cutoff for ST candidates were 335669 (for CSE) and 354515 (for ECE) . In 2020, JEE Main Cutoff Rank for B.Tech in Electronics and Communication Engineering was 443642 for ST category candidates.

To get more information about cutoff at IIIT, Guwahati visit this link: https://www.careers360.com/university/indian-institute-of-information-technology-guwahati/cut-off

If you want to get a detailed report on your eligibility in various colleges based on your JEE Main performance, kindly check out JEE Main 2021 College Predictor:

I hope you find this information helpful.

Thank you and all the best.