-4.52% is the change from 420 to 401
Calculation steps:
[( 401 - 420 ) ÷ 420] x 100 = -4.52%
Formula
Percentage change = [(401 - 420) / 420] x 100
Subtract the new number by the original number
401 - 420 = -19
-19 ÷ 420 = -0.04523809523809524
-0.04523809523809524 x 100 = -4.52%