Hi Sayan Roy,
The eligibility criteria for top 20 percentile and 75 percentage was to attain one of them. You should get at least one of them to clear the board exam eligibility. So eventually both are acceptable and either of them is acceptable by the counselling process. All the best!!!
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile