2018-04-12 14:00:19 -04:00
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Only applies to items that exist in both sets of data
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**Change in Price**
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( P₂ - P₁ ) Q₂
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**Change in Quantity**
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( Q₂ - Q₁ ) P₁
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_To further break out change in quantity_
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Change in Quantity - _Volume Related_
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Q₂ ( Q₁ / Σ ( Q₁ ) ) - Q₁
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Change in Quantity - _Mix Related_
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2017-09-28 12:01:06 -04:00
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Q₂ - Q₂ ( Q₁ / Σ ( Q₁ ) )
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