-1.17% is the change from 342 to 338
Calculation steps:
[( 338 - 342 ) ÷ 342] x 100 = -1.17%
Formula
Percentage change = [(338 - 342) / 342] x 100
Subtract the new number by the original number
338 - 342 = -4
-4 ÷ 342 = -0.011695906432748537
-0.011695906432748537 x 100 = -1.17%