159.92% is the change from 257 to 668
Calculation steps:
[( 668 - 257 ) ÷ 257] x 100 = 159.92%
Formula
Percentage change = [(668 - 257) / 257] x 100
Subtract the new number by the original number
668 - 257 = 411
411 ÷ 257 = 1.5992217898832686
1.5992217898832686 x 100 = 159.92%