552.53% is the change from 99 to 646
Calculation steps:
[( 646 - 99 ) ÷ 99] x 100 = 552.53%
Formula
Percentage change = [(646 - 99) / 99] x 100
Subtract the new number by the original number
646 - 99 = 547
547 ÷ 99 = 5.525252525252525
5.525252525252525 x 100 = 552.53%