-17.41% is the change from 580 to 479
Calculation steps:
[( 479 - 580 ) ÷ 580] x 100 = -17.41%
Formula
Percentage change = [(479 - 580) / 580] x 100
Subtract the new number by the original number
479 - 580 = -101
-101 ÷ 580 = -0.17413793103448275
-0.17413793103448275 x 100 = -17.41%