Sanskriti, MAT Percentile score is declared along with the MAT SCORECARD and so you need not to calculate it or predict it, rather you should check your MAT Results to know your percentile in the exam. The MAT Result contains the sectional and the overall scores along with the percentile secured and if you have not checked the results yet, then you can go to the following link to check https://mat.aima.in/mat-result/

Also, it is extremely difficult to predict the percentile as it depends on the total number of candidates for the exam which is difficult to predict, however, going by previous years trends, you may expect a percentile close to 43-44.

If you want to predict the colleges which you would get at this score, you can use this predictor

https://bschool.careers360.com/pathfinder/mat