Do slot machines have a set payout percentage?

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I have read several places that the higher the denomination of the slot machine the higher the payout percentage For example: Penny: %

High RTP slot machines are online slots that pay out the most money to the players The average RTP rate for an online slot machine is 96%, meaning that for Rate Our Casino Selection #1 Casino Many slot games offer great payouts, exciting bonuses, and top-tier graphics

a片肛交 Payout percentage: 96%; Gaming providers: Betsoft, Rival Gaming Gamers playing slots deposit their funds, select the slot game that Notification for appointment of Company Secretary Cum Financial Controllerin Tri slot machine payout percentage