177.14% is the change from 280 to 776
Calculation steps:
[( 776 - 280 ) ÷ 280] x 100 = 177.14%
Formula
Percentage change = [(776 - 280) / 280] x 100
Subtract the new number by the original number
776 - 280 = 496
496 ÷ 280 = 1.7714285714285714
1.7714285714285714 x 100 = 177.14%