-21.69% is the change from 498 to 390
Calculation steps:
[( 390 - 498 ) ÷ 498] x 100 = -21.69%
Formula
Percentage change = [(390 - 498) / 498] x 100
Subtract the new number by the original number
390 - 498 = -108
-108 ÷ 498 = -0.21686746987951808
-0.21686746987951808 x 100 = -21.69%