2.23% is the change from 314 to 321
Calculation steps:
[( 321 - 314 ) ÷ 314] x 100 = 2.23%
Formula
Percentage change = [(321 - 314) / 314] x 100
Subtract the new number by the original number
321 - 314 = 7
7 ÷ 314 = 0.022292993630573247
0.022292993630573247 x 100 = 2.23%