-19.35% is the change from 615 to 496
Calculation steps:
[( 496 - 615 ) ÷ 615] x 100 = -19.35%
Formula
Percentage change = [(496 - 615) / 615] x 100
Subtract the new number by the original number
496 - 615 = -119
-119 ÷ 615 = -0.19349593495934958
-0.19349593495934958 x 100 = -19.35%