-18.86% is the change from 615 to 499
Calculation steps:
[( 499 - 615 ) ÷ 615] x 100 = -18.86%
Formula
Percentage change = [(499 - 615) / 615] x 100
Subtract the new number by the original number
499 - 615 = -116
-116 ÷ 615 = -0.1886178861788618
-0.1886178861788618 x 100 = -18.86%