Our company creates Client Visit Reports on a regular basis using SF.  We also maintain a savings percentage specific to the client on the Account record.  We update the savings percentage about once a month with a new value.  When a user creates a new Client Visit Report and selects the related account I would like the savings percentage to automatically populate to the Client Visit Report (which is a custom object).  Once populated I would like the savings percentage value to remain constant in the custom object even thought original value on the Account record might change.  Is this possible in EE?

Our company creates Client Visit Reports on a regular basis using SF.  We also maintain a savings percentage specific to the client on the Account record.  We update the savings percentage about once a month with a new value.  When a user creates a new Client Visit Report and selects the related account I would like the savings percentage to automatically populate to the Client Visit Report (which is a custom object).  Once populated I would like the savings percentage value to remain constant in the custom object even thought original value on the Account record might change.  Is this possible in EE?