Trying to do the math of a asset loading bar, help?

So I am trying to make a bar that calculates how many assets in a table there are to load and then every asset the bar progresses the correct amount. How would I do this? Here is the script:

game.Players.PlayerAdded:connect(function(plr)
	local gui = script.Welcome:Clone()
	gui.Parent = plr.PlayerGui
	local sound = gui.Sound
	repeat wait() until plr.Character
	plr.Character:remove()
	wait(3)
	wait(.2)
	assets = {147183919,131326340,154904310}
	asse = 1
	for _, asset in ipairs(assets) do
		local m = #assets
		local bar = gui.Background.Progress.Bar
		gui.Background.Preload.Text = "Preloading asset "..asset.." ("..asse.."/"..m..")"
    	game:GetService("ContentProvider"):Preload("http://www.roblox.com/asset/?id=" .. asset)
		bar.Size = UDim2.new() --Trying to put it here, but I have no idea how to do the math
		asse = asse + 1
		wait(.3)
	end
	gui.Background.Preload.Text = "Done"
	for i = 1,10 do
		gui.Background.Preload.TextTransparency = gui.Background.Preload.TextTransparency + .1
		wait(.01)
	end
	wait(1.5)
	gui.Background.Preload:remove()
	wait(1)
	gui.Background.Message.Visible = true
	sound:Play()
	wait(1)
	gui.Background.Secondary.Text.Visible = true
	sound:Play()
	wait(1)
	gui.Background.Secondary.NameG.Visible = true
	sound:Play()
	wait(1)
	gui.Background.Scripted.Text.Visible = true
	gui.Background.Scripted.NameG.Visible = true
	sound:Play()
	wait(2)
	for i = 1,10 do
		gui.Background.Message.TextTransparency = gui.Background.Message.TextTransparency + .1
		gui.Background.Message.TextStrokeTransparency = gui.Background.Message.TextStrokeTransparency + .1
		gui.Background.Secondary.NameG.TextTransparency = gui.Background.Secondary.NameG.TextTransparency + .1
		gui.Background.Secondary.NameG.TextStrokeTransparency = gui.Background.Secondary.NameG.TextStrokeTransparency + .1
		gui.Background.Secondary.Text.TextTransparency = gui.Background.Secondary.Text.TextTransparency + .1
		gui.Background.Secondary.Text.TextStrokeTransparency = gui.Background.Secondary.Text.TextStrokeTransparency + .1
		gui.Background.Scripted.Text.TextTransparency = gui.Background.Secondary.Text.TextTransparency + .1
		gui.Background.Scripted.Text.TextStrokeTransparency = gui.Background.Secondary.Text.TextStrokeTransparency + .1
		gui.Background.Scripted.NameG.TextTransparency = gui.Background.Secondary.Text.TextTransparency + .1
		gui.Background.Scripted.NameG.TextStrokeTransparency = gui.Background.Secondary.Text.TextStrokeTransparency + .1
		wait(.1)
	end
	plr:LoadCharacter()
	local gui = script.Welcome:Clone()
	gui.Parent = plr.PlayerGui
	gui.Background.Preload:remove()
	wait(1)
	for i = 1,100 do
		gui.Background.BackgroundTransparency = gui.Background.BackgroundTransparency + .01
		wait(.01)
	end
	gui:remove()
end)