-22.83% is the change from 438 to 338
Calculation steps:
[( 338 - 438 ) ÷ 438] x 100 = -22.83%
Formula
Percentage change = [(338 - 438) / 438] x 100
Subtract the new number by the original number
338 - 438 = -100
-100 ÷ 438 = -0.228310502283105
-0.228310502283105 x 100 = -22.83%