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Write a model change log entry with the impact math

  • For FP&A and financial analysts
  • You practice Asking for a format you can use
  • Time about 5 minutes
  • Level Beginner

About this exercise

You documented a change to the revenue model today. Write a prompt for a plain-text change log entry with exactly these labels, one per line: "Date:", "Changed by:", "Location:", "Change:", "Impact on FY27 revenue:", "Reviewer:". The impact line shows the math. Include only the change that affects numbers. Under 80 words.

Common mistakes when you ask AI for this

  • Logging every change. The AI lists the formatting fix and file rename as changes. Try: Say: "Log only the change that affects numbers."
  • Impact with no math. The AI writes 'revenue decreases' without the figure. Try: Add: "Show the math: base x (new rate - old rate)."
  • Naming an unassigned reviewer. The AI puts Gil as reviewer. Try: Add: 'Reviewer: write "Pending" if nobody is assigned.'
  • Markdown extras. The AI adds bold labels, headings and a closing note. Try: Say: "Plain text, no bold. Output only the lines asked for."
  • Trusting the AI to count words. AI is bad at counting and runs past word limits. Try: Ask for fewer words than the real cap and keep each line short.

What a strong prompt includes

  • Names the six labels
  • Limits to numeric changes
  • Asks for impact math
  • Handles reviewer
  • Caps length

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