73.17% is the change from 287 to 497
Calculation steps:
[( 497 - 287 ) ÷ 287] x 100 = 73.17%
Formula
Percentage change = [(497 - 287) / 287] x 100
Subtract the new number by the original number
497 - 287 = 210
210 ÷ 287 = 0.7317073170731707
0.7317073170731707 x 100 = 73.17%