Hello Rakesh

Predicting the actual rank would be difficult as the JEE Main exam is being conducted twice for the first time. But, your expected rank would be around 816,394 - 866,394.
Also, It should be noted that  the Overall Rank Predicted is on the basis of the expected total number of students i.e. 1150000 appearing in the JEE Mains April Session.

With this percentile score, you mght have the chances to qualify for the JEE Advanced exam.

Good Luck!