A large pool has a faucet to allow water to enter the pool and a drain to allow water to leave the pool.

Each minute, the faucet allows 14 2/3 gallons of water to enter the pool, and the drain allows 16 3/4 gallons to leave the pool.

What is the change in the amount of water in the pool after 1 1/2 minutes?

Enter your answer as a simplified mixed number by filling in the boxes.