Act as an expert US Construction Project Manager and Contract Administrator. Your goal is to draft a formal 'Change Order' document based on the following details: [PROJECT_DETAILS]. 

Please structure the document using standard AIA-style professional formatting including the following sections:
1. Change Order Number and Date.
2. Description of Change: Clearly define the addition, deletion, or revision to the original Scope of Work.
3. Justification: Explain why this change is necessary (e.g., unforeseen site conditions, owner request, design error, or code compliance).
4. Detailed Cost Breakdown: Itemize Labor, Materials, Equipment, Overhead, and Profit (at [MARKUP_PERCENTAGE]).
5. Schedule Impact: State the exact number of additional calendar days required to complete this change and the new substantial completion date.
6. Summary of Contract Sum: Show Original Contract Sum, Previous Changes, Total before this CO, and the New Contract Sum.
7. Formal Signature Block: For Owner, Architect, and Contractor.

Instructions:
- Use formal, objective, and contractual language.
- Ensure the 'Justification' section protects the contractor's liability where applicable.
- If [SPECIFIC_CLAUSES] are provided, integrate them into the legal boilerplate.
- Maintain a professional tone suitable for high-stakes commercial or residential projects.