Powershell/PowerCLI Dynamic Email Message Body with Datastores

Hello the following is related to this email but I am stuck in rounding the numbers

Powershell/PowerCLI Dynamic Email Message Body

I am getting an email with the following info:

Datastore HealthCheck vCenter

Datastore Space Available
Datastore                                UsedGB                                Free GB                                Perc Free
name1                                        273.30078125                         274.25                                    99%
name2                                        273.30078125                         274.25                                    99%
name3                                        268.466796875                         274.25                                    99%
name4                                        273.30078125                         274.25                                    99%

Three things that I am stuck: First, the UsedGB value, woud like to have it with only two decimal points, instead of having 273.30078125, nice to have 273.30. Second I am not getting the right percentage. Third: How do i sort the the Perf Free values from the lowest to the bigger percentage? Thanks for your help

Code:

    $array0 = @()

    $array1 = @()

    $array2 = @()

    start-sleep 1

    connect-VIServer $vcserver

    $array0 += Get-Datastore | Select-Object -ExpandProperty Name

    $array1 += Get-Datastore | Select-Object -ExpandProperty FreeSpaceGB

    $array2 += Get-Datastore | Select-Object -ExpandProperty CapacityGB

    $UsedSpace = [math]::round(($array2[$i] - $array1[$i]),2)

    $PercFree = [math]::Round((100 * $array1[$i] / $array2[$i]),0)

    $String0 = "$PercFree$Percent"

    $i = 0

    $j = 0

    # Header

    $msg.Body += "<FONT COLOR=black>Datastore HealthCheck CompanyvCenter</FONT><BR><BR>"

    # Datastore header

    $msg.Body += "<B><FONT COLOR=black>Datastore Space Available</FONT></B><BR>"

    $msg.Body += "<B><FONT COLOR=black>Datastore</FONT></B><B><FONT COLOR=black>                                             UsedGB</FONT></B>`

    <B><FONT COLOR=black>                                Free GB</FONT></B>`

    <B><FONT COLOR=black>                                Perc Free</FONT></B>"

    # Datasores

    0..($array0.Count-1) | %{

    $msg.Body += "<BR><FONT COLOR=Black>" + $array0[$_]

    $msg.Body += "</FONT>                                        <FONT COLOR=Black>" + [math]::round(($array2[$_] - $array1[$_]),2)

    #$msg.Body += "</FONT>                                        <FONT COLOR=Black>" + $array1[$_]

    $msg.Body += "</FONT>                         <FONT COLOR=Black>" + $array2[$_] + "</FONT>"

    #$msg.Body += "</FONT>                         <FONT COLOR=Black>" + [math]::round(($array2[$_] - $array1[$_]),2) + "</FONT>"

    $msg.Body += "                                     <FONT COLOR=Black>" + [math]::Round((100 * $array1[$i] / $array2[$i]),0)+"$Percent"+"</FONT><BR>"}

    $msg.Attachments.Add($att1)

    $msg.IsBodyHTML = $true

    $smtp.Send($msg)

    $att1.Dispose()

    Disconnect-VIServer $vcserver -Confirm:$false