2.87% is the change from 279 to 287
Calculation steps:
[( 287 - 279 ) ÷ 279] x 100 = 2.87%
Formula
Percentage change = [(287 - 279) / 279] x 100
Subtract the new number by the original number
287 - 279 = 8
8 ÷ 279 = 0.02867383512544803
0.02867383512544803 x 100 = 2.87%