51.26% is the change from 318 to 481
Calculation steps:
[( 481 - 318 ) ÷ 318] x 100 = 51.26%
Formula
Percentage change = [(481 - 318) / 318] x 100
Subtract the new number by the original number
481 - 318 = 163
163 ÷ 318 = 0.5125786163522013
0.5125786163522013 x 100 = 51.26%