Here's how to do it:
- Select your data by clicking the first cell, then press Ctrl + Shift + Right Arrow and Ctrl + Shift + Down Arrow.
- Go to the Home tab, click on Conditional Formatting, and select Manage Rules.
- Click New Rule, then click OK.
- Choose Format only cells that contain.
- Set the rule to format cells with values greater than or equal to your sales target (e.g., 5000).
- Click the Format button, go to the Fill tab, and choose a color for the background (e.g., green).
- Click Apply and OK to highlight cells above the target in green. Changing the sales target (e.g., to 7500) will automatically update the formatting.