166.54% is the change from 257 to 685
Calculation steps:
[( 685 - 257 ) ÷ 257] x 100 = 166.54%
Formula
Percentage change = [(685 - 257) / 257] x 100
Subtract the new number by the original number
685 - 257 = 428
428 ÷ 257 = 1.6653696498054475
1.6653696498054475 x 100 = 166.54%