606.06% is the change from 99 to 699
Calculation steps:
[( 699 - 99 ) ÷ 99] x 100 = 606.06%
Formula
Percentage change = [(699 - 99) / 99] x 100
Subtract the new number by the original number
699 - 99 = 600
600 ÷ 99 = 6.0606060606060606
6.0606060606060606 x 100 = 606.06%