34.8% is the change from 638 to 860
Calculation steps:
[( 860 - 638 ) ÷ 638] x 100 = 34.8%
Formula
Percentage change = [(860 - 638) / 638] x 100
Subtract the new number by the original number
860 - 638 = 222
222 ÷ 638 = 0.34796238244514105
0.34796238244514105 x 100 = 34.8%