-9.87% is the change from 618 to 557
Calculation steps:
[( 557 - 618 ) ÷ 618] x 100 = -9.87%
Formula
Percentage change = [(557 - 618) / 618] x 100
Subtract the new number by the original number
557 - 618 = -61
-61 ÷ 618 = -0.09870550161812297
-0.09870550161812297 x 100 = -9.87%