Demo-RSJobStatus.ps1

import-module poshrsjob;
$PollingInterval = 5;
$CompletedThreads = 0;
$Status = Get-RSJob | Group-Object -Property State;
$TotalThreads = ($Status|Select-Object -ExpandProperty Count | Measure-Object -Sum).Sum;
while ($CompletedThreads -lt $TotalThreads) {
    $CurrentJobs = Get-RSJob;
    $CurrentJobs.Where( {$PSItem.State -eq "Completed"}) | Receive-RSJob | Out-Null;
    $CurrentJobs.Where( {$PSItem.State -eq "Completed"}) | Remove-RSJob | Out-Null;
    $Status = $CurrentJobs|Group-Object -Property State;
    $CompletedThreads += $Status | Where-Object {$PSItem.Name -eq "Completed"} | Select-Object -ExpandProperty Count;
    $PctComplete = ($CompletedThreads / $TotalThreads) * 100;
    Write-Progress -Activity "Downloading Files" -Status "Completed $CompletedThreads of $TotalThreads ($PctComplete)%" -Id 1 -PercentComplete $PctComplete;
    start-sleep -seconds $PollingInterval;
}