4.67% is the change from 321 to 336
Calculation steps:
[( 336 - 321 ) ÷ 321] x 100 = 4.67%
Formula
Percentage change = [(336 - 321) / 321] x 100
Subtract the new number by the original number
336 - 321 = 15
15 ÷ 321 = 0.04672897196261682
0.04672897196261682 x 100 = 4.67%