-18.45% is the change from 618 to 504
Calculation steps:
[( 504 - 618 ) ÷ 618] x 100 = -18.45%
Formula
Percentage change = [(504 - 618) / 618] x 100
Subtract the new number by the original number
504 - 618 = -114
-114 ÷ 618 = -0.18446601941747573
-0.18446601941747573 x 100 = -18.45%