-8.71% is the change from 815 to 744
Calculation steps:
[( 744 - 815 ) ÷ 815] x 100 = -8.71%
Formula
Percentage change = [(744 - 815) / 815] x 100
Subtract the new number by the original number
744 - 815 = -71
-71 ÷ 815 = -0.08711656441717791
-0.08711656441717791 x 100 = -8.71%