12.82% is the change from 312 to 352
Calculation steps:
[( 352 - 312 ) ÷ 312] x 100 = 12.82%
Formula
Percentage change = [(352 - 312) / 312] x 100
Subtract the new number by the original number
352 - 312 = 40
40 ÷ 312 = 0.1282051282051282
0.1282051282051282 x 100 = 12.82%