To remove or change the net worth contribution, go to Accounts and assets, select the account you wish to edit, and select the edit pencil icon.
On the next screen, you will find the Net Worth Contribution toggle which you can then set to on or off.
You can edit the percentage you wish the account to contribute, this is particularly useful if you have a joint account.
Once you have finished, select Save.
For more information, check out our article Edit account details.