-43.71% is the change from 421 to 237
Calculation steps:
[( 237 - 421 ) ÷ 421] x 100 = -43.71%
Formula
Percentage change = [(237 - 421) / 421] x 100
Subtract the new number by the original number
237 - 421 = -184
-184 ÷ 421 = -0.43705463182897863
-0.43705463182897863 x 100 = -43.71%