-27.71% is the change from 581 to 420
Calculation steps:
[( 420 - 581 ) ÷ 581] x 100 = -27.71%
Formula
Percentage change = [(420 - 581) / 581] x 100
Subtract the new number by the original number
420 - 581 = -161
-161 ÷ 581 = -0.27710843373493976
-0.27710843373493976 x 100 = -27.71%