26.86% is the change from 309 to 392
Calculation steps:
[( 392 - 309 ) ÷ 309] x 100 = 26.86%
Formula
Percentage change = [(392 - 309) / 309] x 100
Subtract the new number by the original number
392 - 309 = 83
83 ÷ 309 = 0.2686084142394822
0.2686084142394822 x 100 = 26.86%