17.24% is the change from 261 to 306
Calculation steps:
[( 306 - 261 ) ÷ 261] x 100 = 17.24%
Formula
Percentage change = [(306 - 261) / 261] x 100
Subtract the new number by the original number
306 - 261 = 45
45 ÷ 261 = 0.1724137931034483
0.1724137931034483 x 100 = 17.24%