139.78% is the change from 279 to 669
Calculation steps:
[( 669 - 279 ) ÷ 279] x 100 = 139.78%
Formula
Percentage change = [(669 - 279) / 279] x 100
Subtract the new number by the original number
669 - 279 = 390
390 ÷ 279 = 1.3978494623655915
1.3978494623655915 x 100 = 139.78%