-12.48% is the change from 817 to 715
Calculation steps:
[( 715 - 817 ) ÷ 817] x 100 = -12.48%
Formula
Percentage change = [(715 - 817) / 817] x 100
Subtract the new number by the original number
715 - 817 = -102
-102 ÷ 817 = -0.12484700122399021
-0.12484700122399021 x 100 = -12.48%