22.88% is the change from 638 to 784
Calculation steps:
[( 784 - 638 ) ÷ 638] x 100 = 22.88%
Formula
Percentage change = [(784 - 638) / 638] x 100
Subtract the new number by the original number
784 - 638 = 146
146 ÷ 638 = 0.22884012539184953
0.22884012539184953 x 100 = 22.88%
Example