28.9% is the change from 481 to 620
Calculation steps:
[( 620 - 481 ) ÷ 481] x 100 = 28.9%
Formula
Percentage change = [(620 - 481) / 481] x 100
Subtract the new number by the original number
620 - 481 = 139
139 ÷ 481 = 0.288981288981289
0.288981288981289 x 100 = 28.9%