-61.9% is the change from 580 to 221
Calculation steps:
[( 221 - 580 ) ÷ 580] x 100 = -61.9%
Formula
Percentage change = [(221 - 580) / 580] x 100
Subtract the new number by the original number
221 - 580 = -359
-359 ÷ 580 = -0.6189655172413793
-0.6189655172413793 x 100 = -61.9%