-53.92% is the change from 421 to 194
Calculation steps:
[( 194 - 421 ) ÷ 421] x 100 = -53.92%
Formula
Percentage change = [(194 - 421) / 421] x 100
Subtract the new number by the original number
194 - 421 = -227
-227 ÷ 421 = -0.5391923990498813
-0.5391923990498813 x 100 = -53.92%