Hello! Hope you are doing well. Firtly, congratulations for your score in JEE Main paper 2. For you to know your predicted rank you can use the following careers360 link. It will help you to predict your rank. The link is " https://engineering.careers360.com/jee-main-architecture-rank-predictor". Hope this will be useful to you.

And secondly, from this year students are given two chances so that they can appear for either one of the exams or both. When given ranks, they will consider the best of two. So, even if you didn't attend the second session your percentage would remain same. They will consider your first session marks or percentage. So, your percetage won't be changing. It will still be 96.01% only. So, you don't have to worry about your percentage decreasing. Good luck!