-7.55% is the change from 887 to 820
Calculation steps:
[( 820 - 887 ) ÷ 887] x 100 = -7.55%
Formula
Percentage change = [(820 - 887) / 887] x 100
Subtract the new number by the original number
820 - 887 = -67
-67 ÷ 887 = -0.07553551296505073
-0.07553551296505073 x 100 = -7.55%