-46.9% is the change from 580 to 308
Calculation steps:
[( 308 - 580 ) ÷ 580] x 100 = -46.9%
Formula
Percentage change = [(308 - 580) / 580] x 100
Subtract the new number by the original number
308 - 580 = -272
-272 ÷ 580 = -0.4689655172413793
-0.4689655172413793 x 100 = -46.9%