Calculate the percentage of customers who paid more than the average rent amount in store 1.
store 1 refers to store_id = 1; average rent amount refers to AVG(amount); calculation = DIVIDE(amount > AVG(amount), COUNT(customer_id)) * 100
SELECT CAST(( SELECT COUNT(T1.customer_id) FROM customer AS T1 INNER JOIN payment AS T2 ON T1.customer_id = T2.customer_id WHERE T2.amount > ( SELECT AVG(amount) FROM payment ) ) AS REAL) * 100 / ( SELECT COUNT(customer_id) FROM customer )