Based on your JEE Main percentile and KCET rank, here's an analysis of your chances for Computer Science (CS) at PES University:

With a 96.1 percentile in JEE Mains, your all-India rank would likely be in the range of 39,000 to 45,000 (this is an estimate and can vary slightly).

Your KCET rank is less than 5000, which is a very good score within Karnataka. PES University considers both JEE Main and KCET ranks for admissions. A significant portion of their seats are filled through KCET for Karnataka students.

As you belong to the OBC 2A category in Karnataka, you will have reservation benefits under the state quota through KCET.

Considering the previous year's KCET cutoff trends for PES University, a rank less than 5000, especially with OBC 2A reservation, gives you a very strong chance of securing a CS seat at PES University .

While JEE Main ranks are also considered, your excellent KCET rank within the state quota will be a significant advantage for admission to PES University, which is located in Bangalore.

Therefore, with your 96.1 percentile in JEE Mains and a KCET rank under 5000 in the OBC 2A category, you have a high probability of getting a CS seat at PES University through the KCET counseling process. Make sure to participate actively in the KCET counseling and list PES University as one of your top preferences.