Construct a confidence interval for p1p2 at the given level

Construct a confidence interval for p1-p2 at the given level of confidence. x1 = 363, n1 = 509, x2 = 428, n2 = 576, 99% confidence

The 99% confidence interval for p1 - p2 is (____ , ____).

use ascending order. Round to three decimal places as needed.)