-26.9% is the change from 342 to 250
Calculation steps:
[( 250 - 342 ) ÷ 342] x 100 = -26.9%
Formula
Percentage change = [(250 - 342) / 342] x 100
Subtract the new number by the original number
250 - 342 = -92
-92 ÷ 342 = -0.26900584795321636
-0.26900584795321636 x 100 = -26.9%