13.4% is the change from 321 to 364
Calculation steps:
[( 364 - 321 ) ÷ 321] x 100 = 13.4%
Formula
Percentage change = [(364 - 321) / 321] x 100
Subtract the new number by the original number
364 - 321 = 43
43 ÷ 321 = 0.13395638629283488
0.13395638629283488 x 100 = 13.4%