-31.49% is the change from 343 to 235
Calculation steps:
[( 235 - 343 ) ÷ 343] x 100 = -31.49%
Formula
Percentage change = [(235 - 343) / 343] x 100
Subtract the new number by the original number
235 - 343 = -108
-108 ÷ 343 = -0.31486880466472306
-0.31486880466472306 x 100 = -31.49%