-73.28% is the change from 580 to 155
Calculation steps:
[( 155 - 580 ) ÷ 580] x 100 = -73.28%
Formula
Percentage change = [(155 - 580) / 580] x 100
Subtract the new number by the original number
155 - 580 = -425
-425 ÷ 580 = -0.7327586206896551
-0.7327586206896551 x 100 = -73.28%