-42.68% is the change from 820 to 470
Calculation steps:
[( 470 - 820 ) ÷ 820] x 100 = -42.68%
Formula
Percentage change = [(470 - 820) / 820] x 100
Subtract the new number by the original number
470 - 820 = -350
-350 ÷ 820 = -0.4268292682926829
-0.4268292682926829 x 100 = -42.68%