24.88% is the change from 639 to 798
Calculation steps:
[( 798 - 639 ) ÷ 639] x 100 = 24.88%
Formula
Percentage change = [(798 - 639) / 639] x 100
Subtract the new number by the original number
798 - 639 = 159
159 ÷ 639 = 0.24882629107981222
0.24882629107981222 x 100 = 24.88%