28.57% is the change from 497 to 639
Calculation steps:
[( 639 - 497 ) ÷ 497] x 100 = 28.57%
Formula
Percentage change = [(639 - 497) / 497] x 100
Subtract the new number by the original number
639 - 497 = 142
142 ÷ 497 = 0.2857142857142857
0.2857142857142857 x 100 = 28.57%