Delta means "Change In".
Any time there is a change in a quantity that change is calculated by taking the later value for that quantity and subtracting from it the earlier value for that quantity.
This can be used in a report by selecting "Add Deltas" under the Summary tab.
Select the "Add Deltas" checkbox under Summary tab:

Report view showing summary with Deltas:

Result: The Deltas() show the change in the Unit Price over the period of time.
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Type: FAQ
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