Question: how to calculate jntuh cgpa to percentage?
Answer: Calculation of SGPA & CGPA under JNTUH – JNTU Hyderabad.
First thing is that.
NOW THE CALCULATING THE PERCENTAGE FROM THE CGPA.
formula to calculate percentage from the CGPA (Cumulative Grade Point Average). ... 
For example :-
Suppose you got 8.67 of CGPA, then percentage will be calculated as;
[8.67 – 0.75] x 10 = 79.2%