569.7% is the change from 99 to 663
Calculation steps:
[( 663 - 99 ) ÷ 99] x 100 = 569.7%
Formula
Percentage change = [(663 - 99) / 99] x 100
Subtract the new number by the original number
663 - 99 = 564
564 ÷ 99 = 5.696969696969697
5.696969696969697 x 100 = 569.7%