RevPAR shows the amount of revenue generated by one room, whether booked or not. There are two ways to calculate it. You can either divide your total room revenue by the total number of available rooms OR multiply ADR by the occupancy rate.
For example, selling 5 rooms out of 10 brought you $2,000, so your RevPAR equals $200 (you’re getting the same result by multiplying your ADR of $400 by the occupancy rate of 0.5.)