51.02% is the change from 639 to 965
Calculation steps:
[( 965 - 639 ) ÷ 639] x 100 = 51.02%
Formula
Percentage change = [(965 - 639) / 639] x 100
Subtract the new number by the original number
965 - 639 = 326
326 ÷ 639 = 0.5101721439749609
0.5101721439749609 x 100 = 51.02%