357.14% is the change from 84 to 384
Calculation steps:
[( 384 - 84 ) ÷ 84] x 100 = 357.14%
Formula
Percentage change = [(384 - 84) / 84] x 100
Subtract the new number by the original number
384 - 84 = 300
300 ÷ 84 = 3.5714285714285716
3.5714285714285716 x 100 = 357.14%