Calculating the number of days between a date field and the current date

Calculating the number of days between a date field and the current date

Can someonce check my formula

I am looking to count the number of days from the current date - back to a count field

Here is my formula 

((zoho.currentdate – Initial_Contact) / (1000 * 60 * 60 * 24))

Initial_Contact - is a date field entered by the user.

I modified the formula found on this page -  https://www.zoho.com/creator/help/fields/configuring-a-formula-field.html#Script_Actions

Thanks in advance