386.9% is the change from 84 to 409
Calculation steps:
[( 409 - 84 ) ÷ 84] x 100 = 386.9%
Formula
Percentage change = [(409 - 84) / 84] x 100
Subtract the new number by the original number
409 - 84 = 325
325 ÷ 84 = 3.869047619047619
3.869047619047619 x 100 = 386.9%