2556% is the change from 25 to 664
Calculation steps:
[( 664 - 25 ) ÷ 25] x 100 = 2556%
Formula
Percentage change = [(664 - 25) / 25] x 100
Subtract the new number by the original number
664 - 25 = 639
639 ÷ 25 = 25.56
25.56 x 100 = 2556%
Example