30.47% is the change from 489 to 638
Calculation steps:
[( 638 - 489 ) ÷ 489] x 100 = 30.47%
Formula
Percentage change = [(638 - 489) / 489] x 100
Subtract the new number by the original number
638 - 489 = 149
149 ÷ 489 = 0.3047034764826176
0.3047034764826176 x 100 = 30.47%