6.27% is the change from 287 to 305
Calculation steps:
[( 305 - 287 ) ÷ 287] x 100 = 6.27%
Formula
Percentage change = [(305 - 287) / 287] x 100
Subtract the new number by the original number
305 - 287 = 18
18 ÷ 287 = 0.0627177700348432
0.0627177700348432 x 100 = 6.27%