Hello

Greetings

Your percentile is 50 It means 50% student of the Total student appeared for the Exam are Behind You Therefore 50% students of the Total students appeared for the exam are Ahead of You, Therefore Your calculated rank is 437234

Your Rank would change Either Your Percentile Score is Increases in the next attempt or Number of Student increases in the Next attemptIf the Number of Student Increases to 1400000 and Your percentile remain same then Your New rank would be 700000

Your rank is Not Good and You should Try in the Next attempt of JEE Main which is JEE Main April and Try to perform well

If Your Percentile Score Increases in the Next attempt Then Your Rank would Be calculated By the Following Formula

(100 - your total percentile score (Higher of two)) X Student appeared in JEE Main/100

You can Use the college Predictor to know about  the possible colleges in which You may get admission by Just following the link given below

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

At this rank It is Not possible to get admission into any NIT, Please try better in the next attempt of JEE Main

You should Try to get more than 98 percentile for NIT

Hope this Helps All the Best