47.18% is the change from 638 to 939
Calculation steps:
[( 939 - 638 ) ÷ 638] x 100 = 47.18%
Formula
Percentage change = [(939 - 638) / 638] x 100
Subtract the new number by the original number
939 - 638 = 301
301 ÷ 638 = 0.4717868338557994
0.4717868338557994 x 100 = 47.18%