255.2% is the change from 279 to 991
Calculation steps:
[( 991 - 279 ) ÷ 279] x 100 = 255.2%
Formula
Percentage change = [(991 - 279) / 279] x 100
Subtract the new number by the original number
991 - 279 = 712
712 ÷ 279 = 2.5519713261648747
2.5519713261648747 x 100 = 255.2%