-18.56% is the change from 609 to 496
Calculation steps:
[( 496 - 609 ) ÷ 609] x 100 = -18.56%
Formula
Percentage change = [(496 - 609) / 609] x 100
Subtract the new number by the original number
496 - 609 = -113
-113 ÷ 609 = -0.18555008210180624
-0.18555008210180624 x 100 = -18.56%