-96.23% is the change from 664 to 25
Calculation steps:
[( 25 - 664 ) ÷ 664] x 100 = -96.23%
Formula
Percentage change = [(25 - 664) / 664] x 100
Subtract the new number by the original number
25 - 664 = -639
-639 ÷ 664 = -0.9623493975903614
-0.9623493975903614 x 100 = -96.23%