-1.46% is the change from 618 to 609
Calculation steps:
[( 609 - 618 ) ÷ 618] x 100 = -1.46%
Formula
Percentage change = [(609 - 618) / 618] x 100
Subtract the new number by the original number
609 - 618 = -9
-9 ÷ 618 = -0.014563106796116505
-0.014563106796116505 x 100 = -1.46%