How to downgrade IE 11 to IE 10 to IE9

We have a lots of users who is running IE11, but the application is not compatiable with IE11, I try to find the script or doscommand from google, but not luck, when you open the IE, then help about, it will show you the KB2898785, if I run with the command like this

wusa /uninstall /kb:2898785, then screen will said Kb: 2898785 does not exist.

Can someone help me on this?

I need to find the script from downgrade from IE11 to IE10 to IE9 for all the windows 7.

Thanks

Lillian