82.8% is the change from 279 to 510
Calculation steps:
[( 510 - 279 ) ÷ 279] x 100 = 82.8%
Formula
Percentage change = [(510 - 279) / 279] x 100
Subtract the new number by the original number
510 - 279 = 231
231 ÷ 279 = 0.8279569892473119
0.8279569892473119 x 100 = 82.8%