33.68% is the change from 481 to 643
Calculation steps:
[( 643 - 481 ) ÷ 481] x 100 = 33.68%
Formula
Percentage change = [(643 - 481) / 481] x 100
Subtract the new number by the original number
643 - 481 = 162
162 ÷ 481 = 0.3367983367983368
0.3367983367983368 x 100 = 33.68%