-38.89% is the change from 342 to 209
Calculation steps:
[( 209 - 342 ) ÷ 342] x 100 = -38.89%
Formula
Percentage change = [(209 - 342) / 342] x 100
Subtract the new number by the original number
209 - 342 = -133
-133 ÷ 342 = -0.3888888888888889
-0.3888888888888889 x 100 = -38.89%