In one of my previous roles, I worked on a project that involved analyzing sales data to identify trends and support strategic decisions. I used Excel extensively, leveraging pivot tables and VLOOKUP to manage and simplify the complex data. For instance, I created pivot tables to summarize sales data by region and product category, which helped in identifying top-performing products and regions. Additionally, I used charts like bar charts and pie charts to visualize monthly sales trends, making it easier for the management to grasp the insights quickly. This visualization was crucial in helping the management make informed decisions about inventory and marketing strategies. The project not only improved my data handling skills but also demonstrated the power of data visualization in driving business decisions.