-89.64% is the change from 618 to 64
Calculation steps:
[( 64 - 618 ) ÷ 618] x 100 = -89.64%
Formula
Percentage change = [(64 - 618) / 618] x 100
Subtract the new number by the original number
64 - 618 = -554
-554 ÷ 618 = -0.8964401294498382
-0.8964401294498382 x 100 = -89.64%