422.22% is the change from 99 to 517
Calculation steps:
[( 517 - 99 ) ÷ 99] x 100 = 422.22%
Formula
Percentage change = [(517 - 99) / 99] x 100
Subtract the new number by the original number
517 - 99 = 418
418 ÷ 99 = 4.222222222222222
4.222222222222222 x 100 = 422.22%