-49.27% is the change from 820 to 416
Calculation steps:
[( 416 - 820 ) ÷ 820] x 100 = -49.27%
Formula
Percentage change = [(416 - 820) / 820] x 100
Subtract the new number by the original number
416 - 820 = -404
-404 ÷ 820 = -0.4926829268292683
-0.4926829268292683 x 100 = -49.27%