-30.86% is the change from 580 to 401
Calculation steps:
[( 401 - 580 ) ÷ 580] x 100 = -30.86%
Formula
Percentage change = [(401 - 580) / 580] x 100
Subtract the new number by the original number
401 - 580 = -179
-179 ÷ 580 = -0.3086206896551724
-0.3086206896551724 x 100 = -30.86%