How to Use Sparklines for Visual Indicators
What if you want to show your data, but don't want to use a full-blown chart? That's where Excel's sparklines feature may be the perfect fit. A sparkline is a trend indicator that works right inside of a cell.
To get started with Sparklines, highlight your data, then jump to the insert tab, and choose one of the sparklines. Select your data and press okay, and then you'll have a nice line chart to show trends.