99.28% is the change from 279 to 556
Calculation steps:
[( 556 - 279 ) ÷ 279] x 100 = 99.28%
Formula
Percentage change = [(556 - 279) / 279] x 100
Subtract the new number by the original number
556 - 279 = 277
277 ÷ 279 = 0.992831541218638
0.992831541218638 x 100 = 99.28%