32.4% is the change from 321 to 425
Calculation steps:
[( 425 - 321 ) ÷ 321] x 100 = 32.4%
Formula
Percentage change = [(425 - 321) / 321] x 100
Subtract the new number by the original number
425 - 321 = 104
104 ÷ 321 = 0.32398753894080995
0.32398753894080995 x 100 = 32.4%