Hello dear ,

Ews rank is the rank for students willing to avail EWS quota . It will help in easing of closing ranks for those students . Ews ranks updates your JEE mains rank by 10% .

Rank=(100-your total score) *(869010/100) where, 100-your total percentile score is the percentage of people ahead of you. 869010 are the number of students appeared for exam.

You can calculate your EWS rank by your JEE mains percentage .

I hope this helps you !