Issue retrieving Discount Rate with Percentage in BeforeSubmit UserEvent Script

Hello Gurus,

I'm struggling to retrieve the discountrate field value (including the percentage sign) in a beforeSubmit UserEvent script deployed on the Invoice record.

The Problem:
Regardless of whether the field contains "10" or "10%", the getValue API always returns "10", stripping the percentage sign.

Example Snippet:

const beforeSubmit = (scriptContext) => {

        let discountRateValue;


        discountRateValue = scriptContext.newRecord.getValue({

                fieldId: 'discountrate'

        });
}

Observed Behavior:

SCENARIO 1:

The value of the discountRateValue is -10

OK 👍️

SCENARIO 2:

The value of the discountRateValue is -10 (even though the field displays -10.0%)

NOK 👎️

Additional notes:

The getText() API does not work in this case because the record mode is not dynamic when scriptContext.type is CREATE.