54.26% is the change from 258 to 398
Calculation steps:
[( 398 - 258 ) ÷ 258] x 100 = 54.26%
Formula
Percentage change = [(398 - 258) / 258] x 100
Subtract the new number by the original number
398 - 258 = 140
140 ÷ 258 = 0.5426356589147286
0.5426356589147286 x 100 = 54.26%