572.73% is the change from 99 to 666
Calculation steps:
[( 666 - 99 ) ÷ 99] x 100 = 572.73%
Formula
Percentage change = [(666 - 99) / 99] x 100
Subtract the new number by the original number
666 - 99 = 567
567 ÷ 99 = 5.7272727272727275
5.7272727272727275 x 100 = 572.73%