32.45% is the change from 638 to 845
Calculation steps:
[( 845 - 638 ) ÷ 638] x 100 = 32.45%
Formula
Percentage change = [(845 - 638) / 638] x 100
Subtract the new number by the original number
845 - 638 = 207
207 ÷ 638 = 0.32445141065830724
0.32445141065830724 x 100 = 32.45%