-75.21% is the change from 815 to 202
Calculation steps:
[( 202 - 815 ) ÷ 815] x 100 = -75.21%
Formula
Percentage change = [(202 - 815) / 815] x 100
Subtract the new number by the original number
202 - 815 = -613
-613 ÷ 815 = -0.7521472392638037
-0.7521472392638037 x 100 = -75.21%