-12.7% is the change from 819 to 715
Calculation steps:
[( 715 - 819 ) ÷ 819] x 100 = -12.7%
Formula
Percentage change = [(715 - 819) / 819] x 100
Subtract the new number by the original number
715 - 819 = -104
-104 ÷ 819 = -0.12698412698412698
-0.12698412698412698 x 100 = -12.7%