-12.8% is the change from 883 to 770
Calculation steps:
[( 770 - 883 ) ÷ 883] x 100 = -12.8%
Formula
Percentage change = [(770 - 883) / 883] x 100
Subtract the new number by the original number
770 - 883 = -113
-113 ÷ 883 = -0.12797281993204984
-0.12797281993204984 x 100 = -12.8%