-68.13% is the change from 342 to 109
Calculation steps:
[( 109 - 342 ) ÷ 342] x 100 = -68.13%
Formula
Percentage change = [(109 - 342) / 342] x 100
Subtract the new number by the original number
109 - 342 = -233
-233 ÷ 342 = -0.6812865497076024
-0.6812865497076024 x 100 = -68.13%