56.79% is the change from 287 to 450
Calculation steps:
[( 450 - 287 ) ÷ 287] x 100 = 56.79%
Formula
Percentage change = [(450 - 287) / 287] x 100
Subtract the new number by the original number
450 - 287 = 163
163 ÷ 287 = 0.5679442508710801
0.5679442508710801 x 100 = 56.79%