19.31% is the change from 321 to 383
Calculation steps:
[( 383 - 321 ) ÷ 321] x 100 = 19.31%
Formula
Percentage change = [(383 - 321) / 321] x 100
Subtract the new number by the original number
383 - 321 = 62
62 ÷ 321 = 0.19314641744548286
0.19314641744548286 x 100 = 19.31%