7.77% is the change from 309 to 333
Calculation steps:
[( 333 - 309 ) ÷ 309] x 100 = 7.77%
Formula
Percentage change = [(333 - 309) / 309] x 100
Subtract the new number by the original number
333 - 309 = 24
24 ÷ 309 = 0.07766990291262135
0.07766990291262135 x 100 = 7.77%