-74.11% is the change from 421 to 109
Calculation steps:
[( 109 - 421 ) ÷ 421] x 100 = -74.11%
Formula
Percentage change = [(109 - 421) / 421] x 100
Subtract the new number by the original number
109 - 421 = -312
-312 ÷ 421 = -0.7410926365795725
-0.7410926365795725 x 100 = -74.11%