699.2% is the change from 125 to 999
Calculation steps:
[( 999 - 125 ) ÷ 125] x 100 = 699.2%
Formula
Percentage change = [(999 - 125) / 125] x 100
Subtract the new number by the original number
999 - 125 = 874
874 ÷ 125 = 6.992
6.992 x 100 = 699.2%
Example