-29.13% is the change from 618 to 438
Calculation steps:
[( 438 - 618 ) ÷ 618] x 100 = -29.13%
Formula
Percentage change = [(438 - 618) / 618] x 100
Subtract the new number by the original number
438 - 618 = -180
-180 ÷ 618 = -0.2912621359223301
-0.2912621359223301 x 100 = -29.13%