-68.97% is the change from 580 to 180
Calculation steps:
[( 180 - 580 ) ÷ 580] x 100 = -68.97%
Formula
Percentage change = [(180 - 580) / 580] x 100
Subtract the new number by the original number
180 - 580 = -400
-400 ÷ 580 = -0.6896551724137931
-0.6896551724137931 x 100 = -68.97%