16.42% is the change from 548 to 638
Calculation steps:
[( 638 - 548 ) ÷ 548] x 100 = 16.42%
Formula
Percentage change = [(638 - 548) / 548] x 100
Subtract the new number by the original number
638 - 548 = 90
90 ÷ 548 = 0.16423357664233576
0.16423357664233576 x 100 = 16.42%