-30.12% is the change from 342 to 239
Calculation steps:
[( 239 - 342 ) ÷ 342] x 100 = -30.12%
Formula
Percentage change = [(239 - 342) / 342] x 100
Subtract the new number by the original number
239 - 342 = -103
-103 ÷ 342 = -0.30116959064327486
-0.30116959064327486 x 100 = -30.12%