26.49% is the change from 638 to 807
Calculation steps:
[( 807 - 638 ) ÷ 638] x 100 = 26.49%
Formula
Percentage change = [(807 - 638) / 638] x 100
Subtract the new number by the original number
807 - 638 = 169
169 ÷ 638 = 0.26489028213166144
0.26489028213166144 x 100 = 26.49%