Mongo Db restoration progress percentage / progress bar

Please provide accurate information when we create a new instance of a database from back up it always shows 94% completed when it actually is restoring the data and some times it takes hours to complete the restoration but the progress bar keep showing 94%. Our restoration started 11 hrs ago and its still not completed but we have no idea what is going on using the GUI also we cant be sure looking at the progress bar on screen.