-37.53% is the change from 810 to 506
Calculation steps:
[( 506 - 810 ) ÷ 810] x 100 = -37.53%
Formula
Percentage change = [(506 - 810) / 810] x 100
Subtract the new number by the original number
506 - 810 = -304
-304 ÷ 810 = -0.37530864197530867
-0.37530864197530867 x 100 = -37.53%