53.76% is the change from 638 to 981
Calculation steps:
[( 981 - 638 ) ÷ 638] x 100 = 53.76%
Formula
Percentage change = [(981 - 638) / 638] x 100
Subtract the new number by the original number
981 - 638 = 343
343 ÷ 638 = 0.5376175548589341
0.5376175548589341 x 100 = 53.76%