-10.8% is the change from 398 to 355
Calculation steps:
[( 355 - 398 ) ÷ 398] x 100 = -10.8%
Formula
Percentage change = [(355 - 398) / 398] x 100
Subtract the new number by the original number
355 - 398 = -43
-43 ÷ 398 = -0.10804020100502512
-0.10804020100502512 x 100 = -10.8%