-19.6% is the change from 495 to 398
Calculation steps:
[( 398 - 495 ) ÷ 495] x 100 = -19.6%
Formula
Percentage change = [(398 - 495) / 495] x 100
Subtract the new number by the original number
398 - 495 = -97
-97 ÷ 495 = -0.19595959595959597
-0.19595959595959597 x 100 = -19.6%