241.43% is the change from 251 to 857
Calculation steps:
[( 857 - 251 ) ÷ 251] x 100 = 241.43%
Formula
Percentage change = [(857 - 251) / 251] x 100
Subtract the new number by the original number
857 - 251 = 606
606 ÷ 251 = 2.414342629482072
2.414342629482072 x 100 = 241.43%