Decompose a revenue change

Help me decompose a revenue change.
Inputs: period data; dimensions.

1. Align periods and comparable bases.
2. decompose price, volume, mix and other effects.
3. reconcile totals and distinguish observations from explanations.

Deliver: Summary, Revenue bridge, Calculation, Customer bridge, Interpretation, Caveats.
Clarify critical gaps, separate facts from assumptions, and do not invent data, citations or completed actions.

My material: [fill in here]

事前準備

Provide period data; dimensions.