-12.15% is the change from 815 to 716
Calculation steps:
[( 716 - 815 ) ÷ 815] x 100 = -12.15%
Formula
Percentage change = [(716 - 815) / 815] x 100
Subtract the new number by the original number
716 - 815 = -99
-99 ÷ 815 = -0.12147239263803682
-0.12147239263803682 x 100 = -12.15%