With 122 marks in JEE Main, on a medium difficulty paper, the percentile will be around 97-98. Since 7th Jan 2nd slot's exam was a bit harder than others, you can expect a better percentile i.e., something in the range of 97.5-98.5.

However the actual difficulty of the question papers relative to each other can be predicted only after NTA releases the question papers.

Hi Manas,

For  the Joint Entrance Examination-Mains 2020, we have our own percentile predictor. Assuming that you belong to the General Category and are not Physically Challenged, I have calculated your percentile to be around 97.61- 97.81 and your rank 20014- 24164. You can check for yourself here: