-46.08% is the change from 421 to 227
Calculation steps:
[( 227 - 421 ) ÷ 421] x 100 = -46.08%
Formula
Percentage change = [(227 - 421) / 421] x 100
Subtract the new number by the original number
227 - 421 = -194
-194 ÷ 421 = -0.46080760095011875
-0.46080760095011875 x 100 = -46.08%