Answering Before the First Spin
Spinning reels decide nothing in advance, and nobody can tell you how often the bison features arrive or what one session will return, because each round is random no matter which payout percentage the game runs at. Treat every outcome as fresh rather than part of a pattern that is due to swing.
Reading the game rules inside the slot is the only place the running payout version shows itself, and the version set for Bison Battle governs what comes back over the long run, never a single sitting. The question of which percentage applies belongs to that rules panel, not to anything shown on this page.
A ceiling on this game sits at a very large multiple of the stake, and reaching it means lining up the best possible combination of features and prize values at once. Landing that total is rare enough that nobody plans a session around it, so treat the number as the top of the scale rather than a target.