84.59% is the change from 279 to 515
Calculation steps:
[( 515 - 279 ) ÷ 279] x 100 = 84.59%
Formula
Percentage change = [(515 - 279) / 279] x 100
Subtract the new number by the original number
515 - 279 = 236
236 ÷ 279 = 0.8458781362007168
0.8458781362007168 x 100 = 84.59%