-31.29% is the change from 342 to 235
Calculation steps:
[( 235 - 342 ) ÷ 342] x 100 = -31.29%
Formula
Percentage change = [(235 - 342) / 342] x 100
Subtract the new number by the original number
235 - 342 = -107
-107 ÷ 342 = -0.3128654970760234
-0.3128654970760234 x 100 = -31.29%