330.3% is the change from 99 to 426
Calculation steps:
[( 426 - 99 ) ÷ 99] x 100 = 330.3%
Formula
Percentage change = [(426 - 99) / 99] x 100
Subtract the new number by the original number
426 - 99 = 327
327 ÷ 99 = 3.303030303030303
3.303030303030303 x 100 = 330.3%