92.86% is the change from 280 to 540
Calculation steps:
[( 540 - 280 ) ÷ 280] x 100 = 92.86%
Formula
Percentage change = [(540 - 280) / 280] x 100
Subtract the new number by the original number
540 - 280 = 260
260 ÷ 280 = 0.9285714285714286
0.9285714285714286 x 100 = 92.86%