Hi Goutham!

Sorry but we cannot predict how many marks you are going to get according to the percentage that you are expecting because it depends upon the number of students who appeared for the exam and this number can either increase or decrease. So my suggestion to you is dont think about the marks, work hard, practice as much as you can, give mock tests, check your score and try to improve in the areas where you are weak. 

I hope this answers your query!

All the best!