The cut off marks are still not announced by the university yet so before that we can't be absolutely sure about this years cut off as they depend upon various factors like number of applicants fill the form, number of applicants finally appeared in the exam, number of questions asked in the exam, difficulty level of the exam, performance of the candidate, previous year's cut offs trends availability of seats in the institution. The admission are done base on your rank only so firstly you need to calculate your rank though the results will be out by tomorrow but by then you may use our rank predictor by going through the link given below. 

https://engineering.careers360.com/gitam-gat-rank-predictor