-4.76% is the change from 820 to 781
Calculation steps:
[( 781 - 820 ) ÷ 820] x 100 = -4.76%
Formula
Percentage change = [(781 - 820) / 820] x 100
Subtract the new number by the original number
781 - 820 = -39
-39 ÷ 820 = -0.0475609756097561
-0.0475609756097561 x 100 = -4.76%