30.53% is the change from 488 to 637
Calculation steps:
[( 637 - 488 ) ÷ 488] x 100 = 30.53%
Formula
Percentage change = [(637 - 488) / 488] x 100
Subtract the new number by the original number
637 - 488 = 149
149 ÷ 488 = 0.305327868852459
0.305327868852459 x 100 = 30.53%