-31.38% is the change from 580 to 398
Calculation steps:
[( 398 - 580 ) ÷ 580] x 100 = -31.38%
Formula
Percentage change = [(398 - 580) / 580] x 100
Subtract the new number by the original number
398 - 580 = -182
-182 ÷ 580 = -0.3137931034482759
-0.3137931034482759 x 100 = -31.38%