-52.59% is the change from 580 to 275
Calculation steps:
[( 275 - 580 ) ÷ 580] x 100 = -52.59%
Formula
Percentage change = [(275 - 580) / 580] x 100
Subtract the new number by the original number
275 - 580 = -305
-305 ÷ 580 = -0.5258620689655172
-0.5258620689655172 x 100 = -52.59%