3850% is the change from 12 to 474
Calculation steps:
[( 474 - 12 ) ÷ 12] x 100 = 3850%
Formula
Percentage change = [(474 - 12) / 12] x 100
Subtract the new number by the original number
474 - 12 = 462
462 ÷ 12 = 38.5
38.5 x 100 = 3850%
Example