-17.84% is the change from 398 to 327
Calculation steps:
[( 327 - 398 ) ÷ 398] x 100 = -17.84%
Formula
Percentage change = [(327 - 398) / 398] x 100
Subtract the new number by the original number
327 - 398 = -71
-71 ÷ 398 = -0.17839195979899497
-0.17839195979899497 x 100 = -17.84%