Hello Aspirant ,

The NAT score given represents percentile that is number of students scoring less than you out of the total students appeared in the exam.

In your case , in maths 80 percent people scored less than you similarily in chemistry 20 percent people and in physics 23 percent people scored less than you scored in the particular subject.

Now getting to your total aggregate 30.568 percent people scored less than you .

This is the way NTA scores were given and the aggregate is not the average of the three subjects.

Good Luck for April attempt!!