The impact of implementing a Power BI dashboard on sales and returns analysis

In a highly competitive sector such as electronics, efficient analysis of sales and returns data is essential for improving processes and boosting store performance. For a fictitious chain of stores, I created a Power BI dashboard with the aim of providing a clear and dynamic view of this data, helping to make more strategic decisions. The main task was to transform raw sales and returns data into valuable, strategic information. To do this, I used Power Query in the ETL (Extract, Transform and Load) process from files in XLSX format. This work included detailed cleaning and normalization of the data, structuring it efficiently for analysis.