I'm sorry to hear that you're having trouble with your chart formatting. Here are some steps you can try to resolve the issue:
- Make sure that you are selecting the actual data labels and lines in the chart, and not just the chart area. You can do this by clicking on the data label or line directly.
- Once you have selected the data labels or lines, go to the Home tab in the Excel ribbon and use the formatting options there to change the font size and line color. Make sure to save your changes.
- If the formatting still reverts to default after saving and closing the file, try saving the file in a different format, such as .xlsx or .xls. Sometimes, saving in a different format can help resolve formatting issues.
- When copying the chart into PowerPoint, try using the "Paste Special" option and choose "Picture (Enhanced Metafile)" or "Picture (PNG)" instead of just pasting the chart as a normal image. This can help preserve the formatting.
- If none of these steps work, you can try recreating the chart from scratch in a new Excel file and see if the formatting holds. You can also try using a different chart type to see if that makes a difference.
I hope these steps help you resolve the issue and get your presentation ready for Monday. Good luck!