-13.1% is the change from 817 to 710
Calculation steps:
[( 710 - 817 ) ÷ 817] x 100 = -13.1%
Formula
Percentage change = [(710 - 817) / 817] x 100
Subtract the new number by the original number
710 - 817 = -107
-107 ÷ 817 = -0.13096695226438188
-0.13096695226438188 x 100 = -13.1%