-96.08% is the change from 638 to 25
Calculation steps:
[( 25 - 638 ) ÷ 638] x 100 = -96.08%
Formula
Percentage change = [(25 - 638) / 638] x 100
Subtract the new number by the original number
25 - 638 = -613
-613 ÷ 638 = -0.9608150470219435
-0.9608150470219435 x 100 = -96.08%