50.78% is the change from 638 to 962
Calculation steps:
[( 962 - 638 ) ÷ 638] x 100 = 50.78%
Formula
Percentage change = [(962 - 638) / 638] x 100
Subtract the new number by the original number
962 - 638 = 324
324 ÷ 638 = 0.5078369905956113
0.5078369905956113 x 100 = 50.78%