Bulk edit now supports selecting a base field for percentage and amount calculations. When editing a field with increase/decrease by percent or amount, you can choose another field as the calculation source.
For example, set sale price to regular price reduced by 10%: select "Sale price" as the field to edit, choose "Decrease value by percent (%)", enter "10", then select "Regular price" as the base field. The calculation uses the base field's value instead of the target field's current value, making bulk pricing updates faster.
