-46.71% is the change from 820 to 437
Calculation steps:
[( 437 - 820 ) ÷ 820] x 100 = -46.71%
Formula
Percentage change = [(437 - 820) / 820] x 100
Subtract the new number by the original number
437 - 820 = -383
-383 ÷ 820 = -0.46707317073170734
-0.46707317073170734 x 100 = -46.71%