15.8% is the change from 481 to 557
Calculation steps:
[( 557 - 481 ) ÷ 481] x 100 = 15.8%
Formula
Percentage change = [(557 - 481) / 481] x 100
Subtract the new number by the original number
557 - 481 = 76
76 ÷ 481 = 0.158004158004158
0.158004158004158 x 100 = 15.8%