-40.2% is the change from 398 to 238
Calculation steps:
[( 238 - 398 ) ÷ 398] x 100 = -40.2%
Formula
Percentage change = [(238 - 398) / 398] x 100
Subtract the new number by the original number
238 - 398 = -160
-160 ÷ 398 = -0.4020100502512563
-0.4020100502512563 x 100 = -40.2%