-17.59% is the change from 580 to 478
Calculation steps:
[( 478 - 580 ) ÷ 580] x 100 = -17.59%
Formula
Percentage change = [(478 - 580) / 580] x 100
Subtract the new number by the original number
478 - 580 = -102
-102 ÷ 580 = -0.17586206896551723
-0.17586206896551723 x 100 = -17.59%