-35.48% is the change from 420 to 271
Calculation steps:
[( 271 - 420 ) ÷ 420] x 100 = -35.48%
Formula
Percentage change = [(271 - 420) / 420] x 100
Subtract the new number by the original number
271 - 420 = -149
-149 ÷ 420 = -0.3547619047619048
-0.3547619047619048 x 100 = -35.48%