-96.26% is the change from 668 to 25
Calculation steps:
[( 25 - 668 ) ÷ 668] x 100 = -96.26%
Formula
Percentage change = [(25 - 668) / 668] x 100
Subtract the new number by the original number
25 - 668 = -643
-643 ÷ 668 = -0.9625748502994012
-0.9625748502994012 x 100 = -96.26%