-7.73% is the change from 880 to 812
Calculation steps:
[( 812 - 880 ) ÷ 880] x 100 = -7.73%
Formula
Percentage change = [(812 - 880) / 880] x 100
Subtract the new number by the original number
812 - 880 = -68
-68 ÷ 880 = -0.07727272727272727
-0.07727272727272727 x 100 = -7.73%