Hello student it's difficult to predict exact cut off as cut off vary every year on various factors like level of question in examination seats available and total nunumber of applicants in the entrance examination. I request you to please help me with your category so that I can check and provide you with the exact information about cut off.

With 83 percentile your rank must be around - 146877.

You can also use careers360 college predictor to predict college -https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer

Feel free to comment if you've any doubt

Good luck