-55.34% is the change from 421 to 188
Calculation steps:
[( 188 - 421 ) ÷ 421] x 100 = -55.34%
Formula
Percentage change = [(188 - 421) / 421] x 100
Subtract the new number by the original number
188 - 421 = -233
-233 ÷ 421 = -0.5534441805225653
-0.5534441805225653 x 100 = -55.34%