3.87% is the change from 310 to 322
Calculation steps:
[( 322 - 310 ) ÷ 310] x 100 = 3.87%
Formula
Percentage change = [(322 - 310) / 310] x 100
Subtract the new number by the original number
322 - 310 = 12
12 ÷ 310 = 0.03870967741935484
0.03870967741935484 x 100 = 3.87%