2.24% is the change from 312 to 319
Calculation steps:
[( 319 - 312 ) ÷ 312] x 100 = 2.24%
Formula
Percentage change = [(319 - 312) / 312] x 100
Subtract the new number by the original number
319 - 312 = 7
7 ÷ 312 = 0.022435897435897436
0.022435897435897436 x 100 = 2.24%