-15.2% is the change from 342 to 290
Calculation steps:
[( 290 - 342 ) ÷ 342] x 100 = -15.2%
Formula
Percentage change = [(290 - 342) / 342] x 100
Subtract the new number by the original number
290 - 342 = -52
-52 ÷ 342 = -0.15204678362573099
-0.15204678362573099 x 100 = -15.2%