396.97% is the change from 99 to 492
Calculation steps:
[( 492 - 99 ) ÷ 99] x 100 = 396.97%
Formula
Percentage change = [(492 - 99) / 99] x 100
Subtract the new number by the original number
492 - 99 = 393
393 ÷ 99 = 3.9696969696969697
3.9696969696969697 x 100 = 396.97%