-2.1% is the change from 618 to 605
Calculation steps:
[( 605 - 618 ) ÷ 618] x 100 = -2.1%
Formula
Percentage change = [(605 - 618) / 618] x 100
Subtract the new number by the original number
605 - 618 = -13
-13 ÷ 618 = -0.021035598705501618
-0.021035598705501618 x 100 = -2.1%