I am a slot shift supervisor. Each denomination has its own percentages. Just like on a single denom multi-poker. Same denom for all games, but each game has its own percentages ie; deuces, dbl dbl, etc.

On a multi denom slot machine, each denom will have its own percents. But when you see a sign advertising a percent you have to remember that that percent is with optimal play over an infinite amount of time. Every person who does not play max will change the infinite percent, in either direction. Or in the case of poker does not hold the correct cards for a given situation will change that percent.