Good Morning Shraddha, 

Congratulations on a successful result of JEE Mains. Rank is calculated or predicted using the formula based on total number of aspirants. Therefore, this year's formula is 100-(Your Total Score) x 874469 / 100. Therefore your rank will be approximately 35,940. 

For more on JEE Rank Prediction, read Careers 360 post at the link given below. 

https://engineering.careers360.com/jee-main-rank-predictor?utm_source=google-search&utm_medium=paid&utm_campaign=jeemain-rp