9.97% is the change from 321 to 353
Calculation steps:
[( 353 - 321 ) ÷ 321] x 100 = 9.97%
Formula
Percentage change = [(353 - 321) / 321] x 100
Subtract the new number by the original number
353 - 321 = 32
32 ÷ 321 = 0.09968847352024922
0.09968847352024922 x 100 = 9.97%