Available in Sage 50 Premium Accounting and higher.
Increase or decrease the price level by a percentage that you specify:
For example, if you want to increase the price level by 10 percent, select Increase by Percent from the drop-down list and enter 10 in the next field. The sign automatically changes to the percent sign (%).
If you want to decrease the price level by 5 percent, select Decrease by Percent from the drop-down list and enter -5 in the next field. The sign automatically changes to the percent sign (%).