-96.23% is the change from 663 to 25
Calculation steps:
[( 25 - 663 ) ÷ 663] x 100 = -96.23%
Formula
Percentage change = [(25 - 663) / 663] x 100
Subtract the new number by the original number
25 - 663 = -638
-638 ÷ 663 = -0.9622926093514329
-0.9622926093514329 x 100 = -96.23%