While you can't directly link individual chart elements (like bars or data points) to specific data cells in Excel, there are ways to ensure your chart reflects changes made to the underlying data:

1. Link the Entire Chart to Data Range:

- Select your chart.
- Go to the "Chart Tools" tab (appears on the ribbon when a chart is selected).
- Click on the "Analyze Data" button in the "Design" group.
- In the "Select Data Source" window, ensure the "Chart data range" box shows the correct cell range containing your data. This range should include both your data labels and the values you want to be charted.

2. Link Chart Titles and Labels to Cells:

- Click on the chart title, axis label, or data label you want to link.
- Alternatively, go to the "Chart Tools" tab and click on "Select Data" in the "Design" group. You can then select the specific chart element from the list on the left.
- In the formula bar, type an equal sign (=) followed by the cell reference containing the text you want to display.
- Press Enter to link the element to the cell.

Remember:

- Any changes made to the data in the linked cells will automatically be reflected in the chart.
- Formatting the linked text elements within the chart itself is still possible (font size, color, etc.).

Additional Tips:

- Use clear and descriptive cell references for easy identification.
- Consider using named ranges for frequently used titles or labels to improve readability in formulas.
- For complex charts with many data series, using a separate data table can help manage linked elements efficiently.