There are two reports that show inventory losses. The Inventory Valuation Detail report shows the quantity of each loss, while the Find Report for all inventory adjustment transactions shows the value of each loss.
To create a report that shows inventory losses by quantity
Choose Reports > Inventory > Inventory Valuation Detail.
Click Customize Report and click the Filters tab.
In the Filter list in the Choose Filter section, click Transaction Type.
Click the Transaction Type drop-down arrow and click Inventory Adjustment.
Scan the report for Inventory Adjust entries with a negative value in the Qty column.
To create a report that shows inventory losses by value
Choose Edit > Find.
Click the Advanced tab.
Click the Transaction Type drop-down arrow and select Inventory Adjustment.
Click Find and then click Report.
Losses appear as values in the Credit column for the account that tracks your inventory value.