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Because it is how `Int` division works. You should convert either `count` or `total` to a `Float` in `percent()`, such that an accurate percentage can be calculated.

I can spot three things inside `percent`: 1) as Edward already said, `20/100` produces an `int` and because the result would be `0.2` it is rounded to `0`, 2) `(count/total)*total` is essentially `count`, maybe you meant `(count/total) * 100`? 3) you can use `val returnVal` instead of `var returnVal`