How to get the progress value that running at backgroundworker wpf c# mvvm

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WPF

C#5.0

PRISM

I am developing wpf application using MVVM Prism. I got four views , MainWindow, ViewB, ViewC and ViewD and all are attached with their respective ViewModel. I initialized the backgroundworker at application start. see the following background worker class.

public class BackGroundThread
    {
        public BackgroundWorker bgWrk;
        public bool stopStatus;
        public int GetPercent;

        public BackGroundThread()
        {
            bgWrk = new BackgroundWorker();

            bgWrk.RunWorkerCompleted += backgroundWorker_RunWorkerCompleted;
            bgWrk.ProgressChanged += backgroundWorker_ProgressChanged;
            bgWrk.DoWork += bw_DoWork;
            bgWrk.WorkerReportsProgress = true;

        }

        public void backgroundWorker_RunWorkerCompleted(object sender,RunWorkerCompletedEventArgs e) { 

        }

        public void backgroundWorker_ProgressChanged(object sender,ProgressChangedEventArgs e)
        {
            Overall.EverythingOk = e.ProgressPercentage.ToString();

        }

        public void bw_DoWork(object sender, DoWorkEventArgs e)
        {
            int i = 1;


            while (!stopStatus)
            {

                GetPercent = I;

                if (i == int.MaxValue)
                    i = 0;
                    i = i + 1;
            }
        }
    }

I called it from MainWindow.xaml.cs and start background worker.

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();            
        ViewModel.MainWindowsViewModel viewModel = new ViewModel.MainWindowsViewModel();
        this.DataContext = viewModel;
        BackGroundThread bgT = new BackGroundThread();
        bgT.bgWrk.RunWorkerAsync();
    }  
}

How can i call the GetPercent variable from the rest of the view? For example, when i navigate to ViewC, ViewC show the real time value using Label or TextBlock (Value is keep increasing.). Then i go to ViewB, ViewB also show real time increment of GetPercent variable.

Any help, really appreciate it.

Thanks