-25.24% is the change from 820 to 613
Calculation steps:
[( 613 - 820 ) ÷ 820] x 100 = -25.24%
Formula
Percentage change = [(613 - 820) / 820] x 100
Subtract the new number by the original number
613 - 820 = -207
-207 ÷ 820 = -0.2524390243902439
-0.2524390243902439 x 100 = -25.24%