-96.27% is the change from 671 to 25
Calculation steps:
[( 25 - 671 ) ÷ 671] x 100 = -96.27%
Formula
Percentage change = [(25 - 671) / 671] x 100
Subtract the new number by the original number
25 - 671 = -646
-646 ÷ 671 = -0.96274217585693
-0.96274217585693 x 100 = -96.27%