Welcome to your interview.
The question is on your right: CPA Percentage Change. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Your client's cost per acquisition (CPA) decreased from $80 to $60 at Red Ventures. What is the percentage change in CPA?