Remove excess precision from data
If you are plotting an annual revenue chart, as in the following screenshot, talking about millions of dollars every month, then showing the 24 Cents at the end of the figures is of no use.
This typically happens when the value is directly pulled from the database and plotted on the chart. Just by rounding off the numbers to the nearest hundredth or thousandth, as shown in the following screenshot, the figures become so much easier to understand.