53.45% is the change from 638 to 979
Calculation steps:
[( 979 - 638 ) ÷ 638] x 100 = 53.45%
Formula
Percentage change = [(979 - 638) / 638] x 100
Subtract the new number by the original number
979 - 638 = 341
341 ÷ 638 = 0.5344827586206896
0.5344827586206896 x 100 = 53.45%