-20.87% is the change from 618 to 489
Calculation steps:
[( 489 - 618 ) ÷ 618] x 100 = -20.87%
Formula
Percentage change = [(489 - 618) / 618] x 100
Subtract the new number by the original number
489 - 618 = -129
-129 ÷ 618 = -0.2087378640776699
-0.2087378640776699 x 100 = -20.87%