jee advanced marks vs rank in sc catogory?

Hello student cut off vary every year so its difficult to predict it as it vary every year on various factors like the level of question in the entrance examination and total number of applicants in that examination. But you can easily calculate and get your rank by using this formula (100-your total percentile) 869010 /100. And after that with the help of percentile you can easily get an overview of marks with the help of marks vs percentile chart on careers360 please visit the link mentioned below
https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Feel free to comment if you have any doubt
Good luck