Hello

Greetings

Your percentile score is only 5 It means 5% student of the Total student appeared for the Exam are Behind You Therefore 95% students of the Total students appeared for the exam are Ahead of You, Therefore Your calculated Approximate rank is 830746

But Note that this is Not Your Final rank Your Rank would change Either Your Percentile Score is Increases in the next attempt or Number of Student increases in the Next attempt If the Number of Student Increases to 1400000 and Your percentile remains same then Your New rank would be more than 1M

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 You don't appear for JEE Main April You will not be able to qualify JEE Main and will not be eligible to appear for JEE Advance

Here are Few Tips for You in the Next attempt

1. You should Focus on NCERT Only and Don't Go for other Books

2. Solve ALL Previous Years Questions of JEE Main and attempt as many as Mock tests You can

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

Hope this Helps All the Best