32.62% is the change from 233 to 309
Calculation steps:
[( 309 - 233 ) ÷ 233] x 100 = 32.62%
Formula
Percentage change = [(309 - 233) / 233] x 100
Subtract the new number by the original number
309 - 233 = 76
76 ÷ 233 = 0.3261802575107296
0.3261802575107296 x 100 = 32.62%