34.27% is the change from 321 to 431
Calculation steps:
[( 431 - 321 ) ÷ 321] x 100 = 34.27%
Formula
Percentage change = [(431 - 321) / 321] x 100
Subtract the new number by the original number
431 - 321 = 110
110 ÷ 321 = 0.3426791277258567
0.3426791277258567 x 100 = 34.27%