378.79% is the change from 99 to 474
Calculation steps:
[( 474 - 99 ) ÷ 99] x 100 = 378.79%
Formula
Percentage change = [(474 - 99) / 99] x 100
Subtract the new number by the original number
474 - 99 = 375
375 ÷ 99 = 3.787878787878788
3.787878787878788 x 100 = 378.79%