-11.81% is the change from 618 to 545
Calculation steps:
[( 545 - 618 ) ÷ 618] x 100 = -11.81%
Formula
Percentage change = [(545 - 618) / 618] x 100
Subtract the new number by the original number
545 - 618 = -73
-73 ÷ 618 = -0.11812297734627832
-0.11812297734627832 x 100 = -11.81%