-19.02% is the change from 615 to 498
Calculation steps:
[( 498 - 615 ) ÷ 615] x 100 = -19.02%
Formula
Percentage change = [(498 - 615) / 615] x 100
Subtract the new number by the original number
498 - 615 = -117
-117 ÷ 615 = -0.1902439024390244
-0.1902439024390244 x 100 = -19.02%