20.67% is the change from 329 to 397
Calculation steps:
[( 397 - 329 ) ÷ 329] x 100 = 20.67%
Formula
Percentage change = [(397 - 329) / 329] x 100
Subtract the new number by the original number
397 - 329 = 68
68 ÷ 329 = 0.2066869300911854
0.2066869300911854 x 100 = 20.67%