-20.28% is the change from 498 to 397
Calculation steps:
[( 397 - 498 ) ÷ 498] x 100 = -20.28%
Formula
Percentage change = [(397 - 498) / 498] x 100
Subtract the new number by the original number
397 - 498 = -101
-101 ÷ 498 = -0.20281124497991967
-0.20281124497991967 x 100 = -20.28%