From the news article it appears that the report is to show people how the economy has been unable to improve. They also want to give people a reason why the economy has be shrinking over the last quarter.
Not much is said about the methodology but the report mentions where the data was gathered from. The analysis was done after collecting output information from production industries.
Yes the information has been communicated in a clear and informative manner, especially for people who have an idea as to what the values mean. There are no graphs used to illustrate anything. To anyone without background understanding of the economy, the article may not be clear.