Answer:
Percentage change in quantity demanded of product A compared to the percentage change in price of product B.
Explanation:
Demand cross-elasticity is the measure of the relative change in the quantity demanded for a good or service (A) as a function of a certain relative change in the price of another good or service (B) considered to be a substitute for or complementary to the first (A). For example, how much would increase the amount of margarine demanded if there was an increase in the price of butter.
