24.12% is the change from 257 to 319
Calculation steps:
[( 319 - 257 ) ÷ 257] x 100 = 24.12%
Formula
Percentage change = [(319 - 257) / 257] x 100
Subtract the new number by the original number
319 - 257 = 62
62 ÷ 257 = 0.24124513618677043
0.24124513618677043 x 100 = 24.12%