2980% is the change from 25 to 770
Calculation steps:
[( 770 - 25 ) ÷ 25] x 100 = 2980%
Formula
Percentage change = [(770 - 25) / 25] x 100
Subtract the new number by the original number
770 - 25 = 745
745 ÷ 25 = 29.8
29.8 x 100 = 2980%
Example