-11.4% is the change from 342 to 303
Calculation steps:
[( 303 - 342 ) ÷ 342] x 100 = -11.4%
Formula
Percentage change = [(303 - 342) / 342] x 100
Subtract the new number by the original number
303 - 342 = -39
-39 ÷ 342 = -0.11403508771929824
-0.11403508771929824 x 100 = -11.4%