Top-Bottom
The Top-Bottom format conditions allow you to highlight a specific number of topmost/bottommost values. You can specify this number as an absolute or percent value.
The following condition types are supported for measures:
Top N
The "Top N" format condition allows you to apply formatting to elements whose values are ranked at the top. For instance, the following image displays a Grid dashboard item whose top 3 Extended Price values filled in green.
Bottom N
The "Bottom N" format condition allows you to apply formatting to elements whose values are ranked at the bottom. For instance, the following image displays a Grid dashboard item whose bottom 40 percent Extended Price values are filled in red.