-35.63% is the change from 421 to 271
Calculation steps:
[( 271 - 421 ) ÷ 421] x 100 = -35.63%
Formula
Percentage change = [(271 - 421) / 421] x 100
Subtract the new number by the original number
271 - 421 = -150
-150 ÷ 421 = -0.35629453681710216
-0.35629453681710216 x 100 = -35.63%