Specify the name of the result window in the Results Name field at the top of the Report Utilization dialog box.
Equivalent Tcl command:
report_utilization -name utilization_1
The following figure shows the detailed utilization report.
Figure 1. Report Utilization

The utilization number or the utilization percentage can be toggled using the button in the report window.
Figure 2. Report Utilization Percentage Toggling
