12.32% is the change from 284 to 319
Calculation steps:
[( 319 - 284 ) ÷ 284] x 100 = 12.32%
Formula
Percentage change = [(319 - 284) / 284] x 100
Subtract the new number by the original number
319 - 284 = 35
35 ÷ 284 = 0.12323943661971831
0.12323943661971831 x 100 = 12.32%