-12.52% is the change from 815 to 713
Calculation steps:
[( 713 - 815 ) ÷ 815] x 100 = -12.52%
Formula
Percentage change = [(713 - 815) / 815] x 100
Subtract the new number by the original number
713 - 815 = -102
-102 ÷ 815 = -0.12515337423312883
-0.12515337423312883 x 100 = -12.52%