79.93% is the change from 279 to 502
Calculation steps:
[( 502 - 279 ) ÷ 279] x 100 = 79.93%
Formula
Percentage change = [(502 - 279) / 279] x 100
Subtract the new number by the original number
502 - 279 = 223
223 ÷ 279 = 0.7992831541218638
0.7992831541218638 x 100 = 79.93%