-9.69% is the change from 815 to 736
Calculation steps:
[( 736 - 815 ) ÷ 815] x 100 = -9.69%
Formula
Percentage change = [(736 - 815) / 815] x 100
Subtract the new number by the original number
736 - 815 = -79
-79 ÷ 815 = -0.09693251533742331
-0.09693251533742331 x 100 = -9.69%