Ваш интерфейс

[DreamlØlz]

Лучше как то так:

local ipairs        =    ipairs;
local UnitHealth    =    UnitHealth;
local UnitHealthMax    =    UnitHealthMax;
local math_ceil        =    math.ceil;
local TSB_CDNV        =    TextStatusBar_CapDisplayOfNumericValue;
local FrameList = {"Player", "Target", "Focus"};
hooksecurefunc("TextStatusBar_UpdateTextString", function()
    for index, UnitID in ipairs(FrameList) do
        local Health = UnitHealth(UnitID);
        local HealthMax = UnitHealthMax(UnitID);
        local HealthPercent = math_ceil(Health / HealthMax * 100);
        _G[UnitID.."FrameHealthBar"].TextString:SetText(TSB_CDNV(Health).." ("..HealthPercent.."%)");
    end;
end) 

Близко, но зачем циклы? =)

    hooksecurefunc("TextStatusBar_UpdateTextString", function(self) 
        local min, text = self.currValue, self.TextString
        if text and min then
            local _, max = self:GetMinMaxValues()
            text:SetFormattedText("%s - %d%s" , min>=1e4 and ('%.1fk'):format(min/1e3):gsub('%.?0+([km])$','%1') or min, min/max*100, "%")
        end
    end)