One of my friends studied at VTU Belgaum. According to him, they follow a CBCS, which is a Choice Based Credit System wherein students have the choice of selecting their subjects/courses based on their interests- core, elective, and foundations.
The last semester is different from all the others because it has project work and internship as well that get graded. Therefore, this is how you will be able to convert a percentage to the CGPA.