-87.06% is the change from 618 to 80
Calculation steps:
[( 80 - 618 ) ÷ 618] x 100 = -87.06%
Formula
Percentage change = [(80 - 618) / 618] x 100
Subtract the new number by the original number
80 - 618 = -538
-538 ÷ 618 = -0.8705501618122977
-0.8705501618122977 x 100 = -87.06%