-19.68% is the change from 498 to 400
Calculation steps:
[( 400 - 498 ) ÷ 498] x 100 = -19.68%
Formula
Percentage change = [(400 - 498) / 498] x 100
Subtract the new number by the original number
400 - 498 = -98
-98 ÷ 498 = -0.19678714859437751
-0.19678714859437751 x 100 = -19.68%