-30.74% is the change from 488 to 338
Calculation steps:
[( 338 - 488 ) ÷ 488] x 100 = -30.74%
Formula
Percentage change = [(338 - 488) / 488] x 100
Subtract the new number by the original number
338 - 488 = -150
-150 ÷ 488 = -0.3073770491803279
-0.3073770491803279 x 100 = -30.74%