Hello Aditi

You got a very decent percentile. For the rank calculation you can go through one simple step which i am going to tell Suppose 874500 are the number of candidates appeared for the January exam. So you can calculate rank by using formula (100- your total score) * 874500 / 100. For more info check our link given below:

https://engineering.careers360.com/jee-main-rank-predictor.

For any more queries please let me know in comment section.