Yep, from StatusWnd script :
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"0",MakeFullSystemMsg(GetSystemMessage(2330),"0",""))));
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"4",MakeFullSystemMsg(GetSystemMessage(2330),"300%",""))));
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"3",MakeFullSystemMsg(GetSystemMessage(2330),"250%",""))));
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"2",MakeFullSystemMsg(GetSystemMessage(2330),"200%",""))));
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"1",MakeFullSystemMsg(GetSystemMessage(2330),"150%",""))));
Statustooltipwnd.SetTooltipCustomType(MakeTooltipSimpleText(MakeFullSystemMsg(GetSystemMessage(2329),"0",MakeFullSystemMsg(GetSystemMessage(2330),"0",""))));
So, you'll need to edit Interface.u
As it's Strings edition, it should be doable.
If you need help, I made a 'short' guide here : http://www.maxcheaters.com/topic/207983-editing-interfaceu/