23.26% is the change from 258 to 318
Calculation steps:
[( 318 - 258 ) ÷ 258] x 100 = 23.26%
Formula
Percentage change = [(318 - 258) / 258] x 100
Subtract the new number by the original number
318 - 258 = 60
60 ÷ 258 = 0.23255813953488372
0.23255813953488372 x 100 = 23.26%