-18.88% is the change from 715 to 580
Calculation steps:
[( 580 - 715 ) ÷ 715] x 100 = -18.88%
Formula
Percentage change = [(580 - 715) / 715] x 100
Subtract the new number by the original number
580 - 715 = -135
-135 ÷ 715 = -0.1888111888111888
-0.1888111888111888 x 100 = -18.88%