168.87% is the change from 257 to 691
Calculation steps:
[( 691 - 257 ) ÷ 257] x 100 = 168.87%
Formula
Percentage change = [(691 - 257) / 257] x 100
Subtract the new number by the original number
691 - 257 = 434
434 ÷ 257 = 1.688715953307393
1.688715953307393 x 100 = 168.87%