32.85% is the change from 481 to 639
Calculation steps:
[( 639 - 481 ) ÷ 481] x 100 = 32.85%
Formula
Percentage change = [(639 - 481) / 481] x 100
Subtract the new number by the original number
639 - 481 = 158
158 ÷ 481 = 0.3284823284823285
0.3284823284823285 x 100 = 32.85%