90.32% is the change from 279 to 531
Calculation steps:
[( 531 - 279 ) ÷ 279] x 100 = 90.32%
Formula
Percentage change = [(531 - 279) / 279] x 100
Subtract the new number by the original number
531 - 279 = 252
252 ÷ 279 = 0.9032258064516129
0.9032258064516129 x 100 = 90.32%