136.58% is the change from 257 to 608
Calculation steps:
[( 608 - 257 ) ÷ 257] x 100 = 136.58%
Formula
Percentage change = [(608 - 257) / 257] x 100
Subtract the new number by the original number
608 - 257 = 351
351 ÷ 257 = 1.3657587548638133
1.3657587548638133 x 100 = 136.58%