-19.84% is the change from 615 to 493
Calculation steps:
[( 493 - 615 ) ÷ 615] x 100 = -19.84%
Formula
Percentage change = [(493 - 615) / 615] x 100
Subtract the new number by the original number
493 - 615 = -122
-122 ÷ 615 = -0.1983739837398374
-0.1983739837398374 x 100 = -19.84%