How to create progress stat in Batch program?

I have heard of people setting it up so that the title bar changes to whatever the percentage is, the problem lies in the fact that you would have to figure out how to set it so that it knows how done it is. for example lets say that you have four process that have to be done you could change the title. ::process 1 routine title 25% completed ::process 2 routine title 50% completed ::process 3 routine title 75% completed ::process 1 routine title 99% completed mike

Is it to display on inside the cmd prmpt. !(not) on title.. thanks