60.36% is the change from 280 to 449
Calculation steps:
[( 449 - 280 ) ÷ 280] x 100 = 60.36%
Formula
Percentage change = [(449 - 280) / 280] x 100
Subtract the new number by the original number
449 - 280 = 169
169 ÷ 280 = 0.6035714285714285
0.6035714285714285 x 100 = 60.36%