77.14% is the change from 280 to 496
Calculation steps:
[( 496 - 280 ) ÷ 280] x 100 = 77.14%
Formula
Percentage change = [(496 - 280) / 280] x 100
Subtract the new number by the original number
496 - 280 = 216
216 ÷ 280 = 0.7714285714285715
0.7714285714285715 x 100 = 77.14%