This marks vs percentile chart is according to old jee mains manner.pls,publish new one for 2020 exam.
Hi degbanshu
Here is the updated version of marks vs percentile of january session. You can refer to the link below :
https://engineering.careers360.com/articles/jee-main-marks-vs-percentile
also if you want to predict rank or your expected college you can refer to the college predictor given below :
All the best !!
Hope it helps :)