• 360 to 310 : 100 - 99.98724751
• 309 to 299: 99.985572 - 99.9740296
• 298 to 288: 99.97589128 - 99.96258028
• 287 to 278: 99.96146328 - 99.94424276
• 277 to 268: 99.94098483 - 99.91929629
• 267 to 258: 99.91836545 - 99.89081262

This time onward the maximum marks for JEE Main reduced to 300 earlier it used to be 360 so for 99.9 percentile which means under 1000 rank the marks requirements would vary for different session as the difficulty level is not the same however a 225 marks would be enough to get 99.9 percentile. This has very large approximation and should be considered.