-96.24% is the change from 665 to 25
Calculation steps:
[( 25 - 665 ) ÷ 665] x 100 = -96.24%
Formula
Percentage change = [(25 - 665) / 665] x 100
Subtract the new number by the original number
25 - 665 = -640
-640 ÷ 665 = -0.9624060150375939
-0.9624060150375939 x 100 = -96.24%