160% is the change from 280 to 728
Calculation steps:
[( 728 - 280 ) ÷ 280] x 100 = 160%
Formula
Percentage change = [(728 - 280) / 280] x 100
Subtract the new number by the original number
728 - 280 = 448
448 ÷ 280 = 1.6
1.6 x 100 = 160%
Example