24.93% is the change from 686 to 857
Calculation steps:
[( 857 - 686 ) ÷ 686] x 100 = 24.93%
Formula
Percentage change = [(857 - 686) / 686] x 100
Subtract the new number by the original number
857 - 686 = 171
171 ÷ 686 = 0.24927113702623907
0.24927113702623907 x 100 = 24.93%