Hello Aarush,

A variation of 20% is expected in the rank predicted using the JEE Mains predictor.

To know more details about the predictor's accuracy please follow the link below :

Https://engineering.careers360.com/articles/careers360-jee-main-rank-predictor-outshines-competitors

Hope this helps.

All the best!

Look This rank Predication & percentile prediction are not accurate but from this you can plan your college.It will deviate Up to +-5 percentage..& See normalisation is depends on Each paper Difficuly and Highest and lowest marks of that particular paper so no one can Predict that Normalisation..There is no formula Given By paper setter institute for Normalisation..