3.03% is the change from 297 to 306
Calculation steps:
[( 306 - 297 ) ÷ 297] x 100 = 3.03%
Formula
Percentage change = [(306 - 297) / 297] x 100
Subtract the new number by the original number
306 - 297 = 9
9 ÷ 297 = 0.030303030303030304
0.030303030303030304 x 100 = 3.03%