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# Converting percent strings into numeric in Pandas DataFrame

schedule Aug 12, 2023
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Consider the following DataFrame:

``` df = pd.DataFrame({"A":["30%","40%"]})df A0 30%1 40% ```

# Solution

To convert column `A` into a numeric column:

``` df["A"] = df["A"].str.rstrip("%").astype("float") / 100df A0 0.31 0.4 ```

# Explanation

Here, we are first stripping the trailing `%` character from each value in column `A`:

``` df["A"].str.rstrip("%") 0 301 40Name: A, dtype: object ```

We then convert this column, which is still of type `string`, to type `float` using `astype("float")`.

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