I want to know the answer to the following question:
The August 2009 cost is a result of what percentage decrease in production cost?
All the background I'm provided with is that "As of January 2008, each unit cost around $400 to manufacture; by August 2009, Sony had reduced costs by a total of 70%, meaning it only costs Sony around $240 per unit.". Is that enough to answer the question?
Answer: yes