-9.11% is the change from 615 to 559
Calculation steps:
[( 559 - 615 ) ÷ 615] x 100 = -9.11%
Formula
Percentage change = [(559 - 615) / 615] x 100
Subtract the new number by the original number
559 - 615 = -56
-56 ÷ 615 = -0.0910569105691057
-0.0910569105691057 x 100 = -9.11%