-7.45% is the change from 886 to 820
Calculation steps:
[( 820 - 886 ) ÷ 886] x 100 = -7.45%
Formula
Percentage change = [(820 - 886) / 886] x 100
Subtract the new number by the original number
820 - 886 = -66
-66 ÷ 886 = -0.0744920993227991
-0.0744920993227991 x 100 = -7.45%