49.81% is the change from 257 to 385
Calculation steps:
[( 385 - 257 ) ÷ 257] x 100 = 49.81%
Formula
Percentage change = [(385 - 257) / 257] x 100
Subtract the new number by the original number
385 - 257 = 128
128 ÷ 257 = 0.4980544747081712
0.4980544747081712 x 100 = 49.81%