-81.9% is the change from 580 to 105
Calculation steps:
[( 105 - 580 ) ÷ 580] x 100 = -81.9%
Formula
Percentage change = [(105 - 580) / 580] x 100
Subtract the new number by the original number
105 - 580 = -475
-475 ÷ 580 = -0.8189655172413793
-0.8189655172413793 x 100 = -81.9%