-7.7% is the change from 883 to 815
Calculation steps:
[( 815 - 883 ) ÷ 883] x 100 = -7.7%
Formula
Percentage change = [(815 - 883) / 883] x 100
Subtract the new number by the original number
815 - 883 = -68
-68 ÷ 883 = -0.07701019252548132
-0.07701019252548132 x 100 = -7.7%