-21.52% is the change from 618 to 485
Calculation steps:
[( 485 - 618 ) ÷ 618] x 100 = -21.52%
Formula
Percentage change = [(485 - 618) / 618] x 100
Subtract the new number by the original number
485 - 618 = -133
-133 ÷ 618 = -0.215210355987055
-0.215210355987055 x 100 = -21.52%