380.81% is the change from 99 to 476
Calculation steps:
[( 476 - 99 ) ÷ 99] x 100 = 380.81%
Formula
Percentage change = [(476 - 99) / 99] x 100
Subtract the new number by the original number
476 - 99 = 377
377 ÷ 99 = 3.808080808080808
3.808080808080808 x 100 = 380.81%