10.45% is the change from 287 to 317
Calculation steps:
[( 317 - 287 ) ÷ 287] x 100 = 10.45%
Formula
Percentage change = [(317 - 287) / 287] x 100
Subtract the new number by the original number
317 - 287 = 30
30 ÷ 287 = 0.10452961672473868
0.10452961672473868 x 100 = 10.45%