33.47% is the change from 481 to 642
Calculation steps:
[( 642 - 481 ) ÷ 481] x 100 = 33.47%
Formula
Percentage change = [(642 - 481) / 481] x 100
Subtract the new number by the original number
642 - 481 = 161
161 ÷ 481 = 0.33471933471933474
0.33471933471933474 x 100 = 33.47%