Every year there are fluctuation in the ranks of the JEE examinations. Now the mark distribution which are observed for most of the ranking normalizations, its expected that the competition will increase as a result the closing rank will decrease. So this kind of fluctuations are expected.

I would recommend you to consider the JEE MAINS predictor from career360 in order to get a more dense and statistically intricate figures.

For JEE MAINS 2021 college predictor visit the link below:

I hope this answer helps. All the very best for your future endeavors!