I'm horrible at math and need to figure out percentages

Help and Feedback Scripting Support
1

I was unsure where to post this but I don’t want my game moderated, so:

I have a table of weighted strings, yeah?

local rates = {

	-- I removed the table after I got the solution

}

And I have this function to determine the outcome:

function m.GenerateRace()
	local TotalWeight = 0

	for i,v in pairs(rates) do
		TotalWeight = TotalWeight + v[2]
	end

	local Chance = math.random(1, TotalWeight)
	local Counter = 0
	
	for i,v in pairs(rates) do
		Counter = Counter + v[2]
		if Chance <= Counter then
			return v[1]
		end
	end
end

I learned that Roblox requires things that the players spend Robux on to have percentages. I don’t know how to calculate the percentages accurately and would really love the help! If there’s any more information needed or I’m just completely wrong, please let me know!

2

I’ll just use this

3

Your first system should work fine though.

4

I didn’t really understand your problem, but for example, if you want to know how much is 25 of 200, apply the formula: (x * 100) / y,
where x = 25 and y = 200.
So, it would be: (25 * 100) / 200 (result = 12.5%).

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