Give some insights on how to analyze the accuracy of sales forecasts for [Company Type/Industry] by comparing projected sales with actual sales data over the past [Time Period]. You can use some sample data to explain, consider factors such as market trends, seasonal variations, and any external influences that may have impacted sales performance. Provide insights on deviations and suggest improvements for future forecasting accuracy.
Company Type/Industry: [Insert here]
Time Period: [Insert here]