The usual price for two identical laptops was $1500 in Store A and $1 250 in Store B. During a sale, both stores offered the same percentage discount for the laptops. The discounted price for the laptop in Store B is $200 cheaper than the discounted price for the laptop in Store A. What is the percentage discount given?

1250 * (1 - x) = 1500 (1 - x) - 200

x = 20%