319.19% is the change from 99 to 415
Calculation steps:
[( 415 - 99 ) ÷ 99] x 100 = 319.19%
Formula
Percentage change = [(415 - 99) / 99] x 100
Subtract the new number by the original number
415 - 99 = 316
316 ÷ 99 = 3.191919191919192
3.191919191919192 x 100 = 319.19%