56.45% is the change from 287 to 449
Calculation steps:
[( 449 - 287 ) ÷ 287] x 100 = 56.45%
Formula
Percentage change = [(449 - 287) / 287] x 100
Subtract the new number by the original number
449 - 287 = 162
162 ÷ 287 = 0.5644599303135889
0.5644599303135889 x 100 = 56.45%