Datatable - Increase Decimal Place Digits

I use the Datatable component and need to expand the number of available decimal places for a field (the field has the correct # of decimal places on the object).  I found this documentation but don't know how/where to make this update.  Any help is greatly appreciated.  

"To specify the granularity on a currency or percentage for inline editing, pass in the step attribute. For example, specify step: 0.01 to allow numbers with two decimal places, or step: 0.001 permits three decimal places. Specify step: 1 to require whole numbers. The default is 0.01. You can preserve the number of fraction digits for display using minimumFractionDigits and maximumFractionDigits.

const columns = [
    {
        label: 'Confidence',
        fieldName: 'confidence',
        type: 'percent',
        typeAttributes: {
            step: '0.00001',
            minimumFractionDigits: '2',
            maximumFractionDigits: '3',
        },
        editable: true,
    },
    //other column data
];

For example, if you pass in confidence: 0.21234 in your column data, the display value is 21.234%. When you inline edit, the step value is used to determine if your input is valid. If you pass in confidence: 0.78, the display value is 78.00% because minimumFractionDigits is set to 2."