I'm assuming that both of these players got it in on the turn, K8o with the nut straight and the 82s player with a flush draw. The 82s has 8 outs to win by a flush and 3 outs to chop.
Statistically speaking, K8o wins around 75-80% of the time, 82s wins here 16-18% of the time and there is a 6-7% chance that a King comes down to chop the pot.