if i got 45 mark in jee sep 4 slot 1 what is my percentile

You can't score Your Percentile on the basis of Marks because Percentile depend on a lot of other factors too which are equally important. Because Students are less this time and also Paper Variation also affects a lot. So One can't decide easily the percentile on the basis of marks.

Your Overall Percentile is: 76.19 - 76.39

Your Predicted Rank is: 217391 - 257541

Your Percentile will be quite low but Still you can get into good colleges on basis of your board marks or JEE MARKS.

I will suggest you to check All The Colleges, That are available for You on basis of your rankings and Reservation, Then You can also check that at Our JEE MAINS COLLEGE Predictor. That will be very helpful for You.

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer So Let's Wait for the Result and Hope for the Best You will score good.

ALL THE BEST :)

As per previous years' trend the percentile scored by you is 79.19 - 79.39. The general rank corresponding to this score is 217391 - 257541. You can use JEE Main rank predictor tool by Careers360 to know about your rank and percentile. As you can see, this is not a good rank for a general category student. You may attempt for the next year JEE Main. Use JEE MAIN COLLEGE PREDICTOR to know about your admission chances. https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer