For consistency across your organization, monetary amounts — such as giving or opportunity totals — use the currency configured for your organization in the database view. For example, if your organization is based in the United Kingdom, but you work across the pond in the United Sates, your currency appears as British pounds instead of US dollars.
To configure the currency for your monetary amounts, set your organization's country and currency from Configuration in the database view.
In International, set up your organization's country and its currency.
In General, choose the country for your organization.