If you use sparklines Excel has some excellent features. Use Excel sparklines to analyze trends in your data.
Certain points on the sparkline can be emphasized with markers—or dots—making the sparkline more readable. For example, in a line with a lot of ups and downs, it may be difficult to tell which ones are the highest and lowest points, but if you show the High Point and Low Point it will be easy to identify them.
Some sparkline types will be better or worse for certain types of data. For example, Win/Loss is best suited for data where there may be positive and negative values (such as net earnings).