Hello Monu, 

The percetile required or the cut-off marks changes from year to year depensing upon the highest scorer's mark, no. of students who took the test etc. However, you can get a sense of it by looking at the cut-off for 2018. It was as follows: 

A. General Category: 600 Marks

B.Reserved Category: SC/ST.OBC- 480 Marks

C. General Physically Handicapped Category- 540 Marks

D.Reserved Physically Handicapped Category- 480 Marks

Based on last year cut-off marks, you can see where you stand. To know more about JEE Cut Off for admission to BCECE, keep reading Careers360 using the link given below: 

https://engineering.careers360.com/articles/bcece-cutoff

Thanks,