78.6% is the change from 257 to 459
Calculation steps:
[( 459 - 257 ) ÷ 257] x 100 = 78.6%
Formula
Percentage change = [(459 - 257) / 257] x 100
Subtract the new number by the original number
459 - 257 = 202
202 ÷ 257 = 0.7859922178988327
0.7859922178988327 x 100 = 78.6%