-96.69% is the change from 664 to 22
Calculation steps:
[( 22 - 664 ) ÷ 664] x 100 = -96.69%
Formula
Percentage change = [(22 - 664) / 664] x 100
Subtract the new number by the original number
22 - 664 = -642
-642 ÷ 664 = -0.9668674698795181
-0.9668674698795181 x 100 = -96.69%