32.68% is the change from 257 to 341
Calculation steps:
[( 341 - 257 ) ÷ 257] x 100 = 32.68%
Formula
Percentage change = [(341 - 257) / 257] x 100
Subtract the new number by the original number
341 - 257 = 84
84 ÷ 257 = 0.32684824902723736
0.32684824902723736 x 100 = 32.68%