A company’s sales data across three regions (North, South, East) for two…

A company’s sales data across three regions (North, South, East) for two products (X, Y) is given. Region North sold 200 units of X and 150 units of Y. South sold 250 units of X and 300 units of Y. East sold 300 units of X but had a 20% decrease in Y’s sales compared to North. What is the total percentage of Y’s sales to the total sales of Y across all regions, if East’s sales of Y were exactly half of South’s?