-37.28% is the change from 810 to 508
Calculation steps:
[( 508 - 810 ) ÷ 810] x 100 = -37.28%
Formula
Percentage change = [(508 - 810) / 810] x 100
Subtract the new number by the original number
508 - 810 = -302
-302 ÷ 810 = -0.3728395061728395
-0.3728395061728395 x 100 = -37.28%