14.23% is the change from 281 to 321
Calculation steps:
[( 321 - 281 ) ÷ 281] x 100 = 14.23%
Formula
Percentage change = [(321 - 281) / 281] x 100
Subtract the new number by the original number
321 - 281 = 40
40 ÷ 281 = 0.1423487544483986
0.1423487544483986 x 100 = 14.23%