-99.84% is the change from 618 to 1
Calculation steps:
[( 1 - 618 ) ÷ 618] x 100 = -99.84%
Formula
Percentage change = [(1 - 618) / 618] x 100
Subtract the new number by the original number
1 - 618 = -617
-617 ÷ 618 = -0.9983818770226537
-0.9983818770226537 x 100 = -99.84%