255.6% is the change from 241 to 857
Calculation steps:
[( 857 - 241 ) ÷ 241] x 100 = 255.6%
Formula
Percentage change = [(857 - 241) / 241] x 100
Subtract the new number by the original number
857 - 241 = 616
616 ÷ 241 = 2.5560165975103732
2.5560165975103732 x 100 = 255.6%