-77.9% is the change from 715 to 158
Calculation steps:
[( 158 - 715 ) ÷ 715] x 100 = -77.9%
Formula
Percentage change = [(158 - 715) / 715] x 100
Subtract the new number by the original number
158 - 715 = -557
-557 ÷ 715 = -0.779020979020979
-0.779020979020979 x 100 = -77.9%