249.64% is the change from 280 to 979
Calculation steps:
[( 979 - 280 ) ÷ 280] x 100 = 249.64%
Formula
Percentage change = [(979 - 280) / 280] x 100
Subtract the new number by the original number
979 - 280 = 699
699 ÷ 280 = 2.4964285714285714
2.4964285714285714 x 100 = 249.64%