-55.58% is the change from 421 to 187
Calculation steps:
[( 187 - 421 ) ÷ 421] x 100 = -55.58%
Formula
Percentage change = [(187 - 421) / 421] x 100
Subtract the new number by the original number
187 - 421 = -234
-234 ÷ 421 = -0.5558194774346793
-0.5558194774346793 x 100 = -55.58%