87.14% is the change from 280 to 524
Calculation steps:
[( 524 - 280 ) ÷ 280] x 100 = 87.14%
Formula
Percentage change = [(524 - 280) / 280] x 100
Subtract the new number by the original number
524 - 280 = 244
244 ÷ 280 = 0.8714285714285714
0.8714285714285714 x 100 = 87.14%