9.86% is the change from 639 to 702
Calculation steps:
[( 702 - 639 ) ÷ 639] x 100 = 9.86%
Formula
Percentage change = [(702 - 639) / 639] x 100
Subtract the new number by the original number
702 - 639 = 63
63 ÷ 639 = 0.09859154929577464
0.09859154929577464 x 100 = 9.86%