This is the first time that VIT had to cancel its entrance examination and conduct admissions based on Board exams and JEE Mains. And it has also been announced that weightage will be given to JEE Mains score. While the marking and weightage scheme has not been announced yet, this answer is being written with general information. Once VIT releases any official information regarding the weightage and marking scheme, we would be able to answer your question with more relevant information. VITEEE doesn't have any reservation and so all Candidates are considered under Open merit alone. And you haven't mentioned your 12th aggregate. But if JEE Mains weightage is considered, 81.2 percentile might be a tad less for top Branches. But you might still get a seat in subsequent rounds of Counselling.

Hey,

This year VITEE exams are being cancelled so they are selecting based upon there 12th percentage. With the given % you have mentioned you can get your desired  branch like CSE in VIT.