By how much has advertising been cut?

Man: The market shares figures seem worrying, don’t they?
Woman: Yes. Now down by 20%. Advertising shrinks by 30%, and I think that is the problem.
Man: Well, actually, it’s all because of a reduction in total expenses.
Woman: So by how much?
Man: 35%.

Man: Have you heard who’s giving the speech as the representative of our business partners?
Woman: It’s normally Ms. Kay.
Man: Not this anniversary party. I heard it’s Mr. Brooks.
Woman: Really? But they just started business with us. I thought it might be Mr. Tanner, classmate of the president.
Man: No. Mr. Brooks’ company invests most heavily in our products and that’s why he is invited to give the speech.