10.25% is the change from 283 to 312
Calculation steps:
[( 312 - 283 ) ÷ 283] x 100 = 10.25%
Formula
Percentage change = [(312 - 283) / 283] x 100
Subtract the new number by the original number
312 - 283 = 29
29 ÷ 283 = 0.10247349823321555
0.10247349823321555 x 100 = 10.25%