-93.07% is the change from 664 to 46
Calculation steps:
[( 46 - 664 ) ÷ 664] x 100 = -93.07%
Formula
Percentage change = [(46 - 664) / 664] x 100
Subtract the new number by the original number
46 - 664 = -618
-618 ÷ 664 = -0.9307228915662651
-0.9307228915662651 x 100 = -93.07%