15.38% is the change from 481 to 555
Calculation steps:
[( 555 - 481 ) ÷ 481] x 100 = 15.38%
Formula
Percentage change = [(555 - 481) / 481] x 100
Subtract the new number by the original number
555 - 481 = 74
74 ÷ 481 = 0.15384615384615385
0.15384615384615385 x 100 = 15.38%