Answer:
Its difficult to give a straight away answer to this question as Yes or No, but I can say partially yes, knowing the total size of the market "helps" you to understand the changes in sales. But to understand why and what it means, you have to look at a whole lot of factors in and out side of the market.
Step-by-step explanation:
Changes to your sales could be influenced by a variety of factors such as the
- Mainstream economic conditions,
- Competitor's new strategies,
- Changes in the product quality,
- Changes in the customer's taste,
- Legal changes and political interventions