Yes, admin users can track survey completion rates during an open survey by logging into Macorva and navigating to Configure > EX Surveys.
Overall completion rate
Each survey will show the % completed next to the survey under the "Completed %" column.
Completion rate by group
Users have the ability to pull completion rate reports at any time after the survey opens. These reports are available by manager and location. To view the reports click the download button next to the survey your wish to view the results for.
You will need to select the report you wish to view and it will automatically download as a csv document that can be opened as a spreadsheet to view.