-54.02% is the change from 820 to 377
Calculation steps:
[( 377 - 820 ) ÷ 820] x 100 = -54.02%
Formula
Percentage change = [(377 - 820) / 820] x 100
Subtract the new number by the original number
377 - 820 = -443
-443 ÷ 820 = -0.5402439024390244
-0.5402439024390244 x 100 = -54.02%