{
  "schema": "vedokrok.public-item.v1",
  "release_id": "MHC-RPUB-20260920-75ad787a",
  "url": "/knowledge/keep-a-proportion-s-value-separate-from-its-display",
  "id": "MHC-D-RESEARCH-0255",
  "version": "0.1.0",
  "title": "Keep a proportion's value separate from its display",
  "summary": "The symbol can disappear while the factor of a hundred remains.",
  "kind": "checklist",
  "body": "Establish whether the field stores a decimal proportion or a percentage number. A value of 0.25 can represent 25%, while another interface may expect the number 25. Record the convention and test a familiar value before moving a whole column.",
  "limits": [
    "Do not infer the convention from one unusually small or large value; confirm the field definition."
  ],
  "topics": [
    "union-numerical-reasoning"
  ],
  "intents": [],
  "source_ids": [
    "RS-B5AD1962D3F47F0D"
  ],
  "evidence": [
    {
      "claim": "A decimal proportion and its percentage representation differ by a factor of 100 in their written numerical form.",
      "source_id": "RS-B5AD1962D3F47F0D",
      "role": "supports",
      "note": "A file format may store or display either convention; the actual field definition must be checked.",
      "locator": "Conversions between percents and decimals"
    }
  ],
  "use_when": [
    "Percentages move between spreadsheets, forms, APIs or reports."
  ],
  "avoid_when": [
    "Do not infer the convention from one unusually small or large value; confirm the field definition."
  ],
  "example": "A field expecting a fraction should receive 0.07 for seven percent, not 7.",
  "check": "The same proportion is preserved across each boundary, independently of how it is displayed.",
  "checklist": [
    "The stored numeric convention is documented.",
    "Formatting is not mistaken for a conversion of the underlying value.",
    "A known example survives export and re-import without a hundredfold change."
  ],
  "sources": [
    {
      "id": "RS-B5AD1962D3F47F0D",
      "title": "Prealgebra 2e, 6.1: Understand Percent",
      "url": "https://openstax.org/books/prealgebra-2e/pages/6-1-understand-percent"
    }
  ],
  "relations": [
    {
      "from": "MHC-D-RESEARCH-0255",
      "to": "MHC-D-RESEARCH-0244",
      "type": "useful_with",
      "url": "/knowledge/ask-what-the-percentage-is-a-percentage-of"
    }
  ],
  "collections": [
    {
      "id": "RC-D976097B2A42D9AC",
      "title": "Make the numbers answer the right question",
      "url": "/collections/make-the-numbers-answer-the-right-question"
    }
  ]
}