33.02% is the change from 321 to 427
Calculation steps:
[( 427 - 321 ) ÷ 321] x 100 = 33.02%
Formula
Percentage change = [(427 - 321) / 321] x 100
Subtract the new number by the original number
427 - 321 = 106
106 ÷ 321 = 0.3302180685358255
0.3302180685358255 x 100 = 33.02%