8.08% is the change from 297 to 321
Calculation steps:
[( 321 - 297 ) ÷ 297] x 100 = 8.08%
Formula
Percentage change = [(321 - 297) / 297] x 100
Subtract the new number by the original number
321 - 297 = 24
24 ÷ 297 = 0.08080808080808081
0.08080808080808081 x 100 = 8.08%