In this custom task grouping, you can display tasks grouped by a range of their percent complete values. The breakdowns show percent complete value of 10 percent point increments: 1-10%, 11-20%, etc. 

The following grouping organizes projects by the percent complete value into one of these groupings:

• 0%
• 1-10%
• 11-20%
• 21-30%
• 31-40%
• 41-50%
• 51-60%
• 61-70%
• 71-80%
• 81-90%
• 91-99%
• 100%

To apply this grouping:

1. Navigate to a list of tasks.
2. From the Grouping drop-down menu, select New Grouping.
3. Click Switch to Text Mode.
4. Remove the text in the Group your Report area.
5. Replace the text with the following code:
   group.0.linkedname=direct
   group.0.name=Percent Breakdown
   group.0.notime=false
   group.0.valueexpression=IF({percentComplete}=0,"0 %",IF({percentComplete}<=11,"1-10 %",IF({percentComplete}<=21,"11-20 %",IF({percentComplete}<=31,"21-30 %",IF({percentComplete}<41,"31-40 %",IF({percentComplete}<51,"41-50 %",IF({percentComplete}<61,"51-60 %",IF({percentComplete}<71,"61-70 %",IF({percentComplete}<81,"71-80 %",IF({percentComplete}<91,"81-90 %",IF({percentComplete}<100,"91-99 %","100 %")))))))))))
   textmode=true
6. Click Save Grouping.