-39.24% is the change from 344 to 209
Calculation steps:
[( 209 - 344 ) ÷ 344] x 100 = -39.24%
Formula
Percentage change = [(209 - 344) / 344] x 100
Subtract the new number by the original number
209 - 344 = -135
-135 ÷ 344 = -0.39244186046511625
-0.39244186046511625 x 100 = -39.24%