19.63% is the change from 321 to 384
Calculation steps:
[( 384 - 321 ) ÷ 321] x 100 = 19.63%
Formula
Percentage change = [(384 - 321) / 321] x 100
Subtract the new number by the original number
384 - 321 = 63
63 ÷ 321 = 0.19626168224299065
0.19626168224299065 x 100 = 19.63%