Predicting percentile and rank is difficult as it depends on number of factors such as-

1. Difficulty level of examination for different shifts.

2. Number of students who appeared in the examination.

3. Total number of seats available for each branch.

But you can predict an approximate percentile and rank by using this link-

https://engineering.careers360.com/jee-main-rank-predictor

To know about your chances in different colleges you can go through this link to predict college-

https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ic i=qna_answer

Dear Pratap,

Congratulations! on scoring well in JEE,

According to your marks which is 143, you will get around 97 to 98 percentile and your rank will lie between 32826-22238. So you can get better NITs as well.

You can get further details from the link given below:

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

You can predict your college from the given link below: