190.66% is the change from 257 to 747
Calculation steps:
[( 747 - 257 ) ÷ 257] x 100 = 190.66%
Formula
Percentage change = [(747 - 257) / 257] x 100
Subtract the new number by the original number
747 - 257 = 490
490 ÷ 257 = 1.906614785992218
1.906614785992218 x 100 = 190.66%