2.19% is the change from 320 to 327
Calculation steps:
[( 327 - 320 ) ÷ 320] x 100 = 2.19%
Formula
Percentage change = [(327 - 320) / 320] x 100
Subtract the new number by the original number
327 - 320 = 7
7 ÷ 320 = 0.021875
0.021875 x 100 = 2.19%
Example