-90.13% is the change from 618 to 61
Calculation steps:
[( 61 - 618 ) ÷ 618] x 100 = -90.13%
Formula
Percentage change = [(61 - 618) / 618] x 100
Subtract the new number by the original number
61 - 618 = -557
-557 ÷ 618 = -0.901294498381877
-0.901294498381877 x 100 = -90.13%