31.76% is the change from 488 to 643
Calculation steps:
[( 643 - 488 ) ÷ 488] x 100 = 31.76%
Formula
Percentage change = [(643 - 488) / 488] x 100
Subtract the new number by the original number
643 - 488 = 155
155 ÷ 488 = 0.3176229508196721
0.3176229508196721 x 100 = 31.76%