-54.63% is the change from 421 to 191
Calculation steps:
[( 191 - 421 ) ÷ 421] x 100 = -54.63%
Formula
Percentage change = [(191 - 421) / 421] x 100
Subtract the new number by the original number
191 - 421 = -230
-230 ÷ 421 = -0.5463182897862233
-0.5463182897862233 x 100 = -54.63%