implement a percentage system,

I’m creating an application for my mother, which takes all the values and reports their percentages to know which was the most used

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You can use the formula to calculate a percentage to get it, but I agree with you, we have other math functions, it’s weird to not have that one.

I don’t know if you’re familiar with the array tools extension. If it doesn’t have what you need then it would be a good place for the added functions.

https://wiki.gdevelop.io/gdevelop5/extensions/array-tools/#array-tools

You just need to count the number of times each value is used, and compare it to the total count.

To get the *ratio* just do count divided by total. So if there are ten entries total and five of them are the same, you would be doing 5/10 or 0.5

To convert this to percentage just multiply by 100. 0.5 * 100 = 50%