6.86% is the change from 306 to 327
Calculation steps:
[( 327 - 306 ) ÷ 306] x 100 = 6.86%
Formula
Percentage change = [(327 - 306) / 306] x 100
Subtract the new number by the original number
327 - 306 = 21
21 ÷ 306 = 0.06862745098039216
0.06862745098039216 x 100 = 6.86%