{
  "id": "percentage-difference-calculator",
  "version": "1.0.0",
  "name": "Percentage Difference Calculator",
  "shortName": "Percentage Difference",
  "description": "Measure the absolute difference between two values relative to their average magnitude.",
  "category": "Math & Statistics",
  "categorySlug": "math-statistics",
  "keywords": [
    "percentage",
    "difference",
    "calculator",
    "percentage difference calculator"
  ],
  "status": "live",
  "workStatus": "pending",
  "reviewStatus": "pending",
  "migrationStatus": "new",
  "engine": "native",
  "creator": null,
  "reviewer": null,
  "quality": {
    "availability": "live",
    "technicalReviewRecord": "/reviews/percentage-difference-calculator.json",
    "qualifiedReview": "pending",
    "qualifiedReviewer": null,
    "qualifiedReviewDate": null,
    "formulaVersion": "1.0.0",
    "referenceCoverage": "references-pending",
    "releaseTestScope": "Catalog and regression checks are not a professional formula audit; consult release evidence.",
    "historicalMetadataDate": "2026-09-01",
    "historicalMetadataNotice": "The imported date is not evidence of a completed human review."
  },
  "urls": {
    "page": "/calculator/percentage-difference-calculator/",
    "definition": "/calculator/percentage-difference-calculator/definition.json",
    "schema": "/calculator/percentage-difference-calculator/schema.json",
    "llms": "/calculator/percentage-difference-calculator/llms.txt",
    "legacyDefinition": "/calculator/percentage-difference-calculator.json"
  },
  "queryExample": "https://askcalculators.com/calculator/percentage-difference-calculator/?valueA=80&valueB=100",
  "queryParameters": {
    "valueA": {
      "label": "First value",
      "type": "number",
      "required": true,
      "default": 80
    },
    "valueB": {
      "label": "Second value",
      "type": "number",
      "required": true,
      "default": 100
    }
  },
  "inputs": [
    {
      "id": "valueA",
      "label": "First value",
      "type": "number",
      "required": true,
      "defaultValue": 80,
      "step": 0.01
    },
    {
      "id": "valueB",
      "label": "Second value",
      "type": "number",
      "required": true,
      "defaultValue": 100,
      "step": 0.01
    }
  ],
  "outputs": [
    {
      "id": "percentageDifference",
      "label": "Percentage difference",
      "format": "percent",
      "primary": true,
      "digits": 8
    },
    {
      "id": "absoluteDifference",
      "label": "Absolute difference",
      "format": "number",
      "digits": 8
    },
    {
      "id": "averageMagnitude",
      "label": "Average magnitude",
      "format": "number",
      "digits": 8
    }
  ],
  "formula": {
    "expression": "percentage difference = |a − b| ÷ ((|a| + |b|) ÷ 2) × 100%"
  },
  "examples": [
    {
      "label": "Reproducible default-input example (not a personal recommendation)",
      "inputs": {
        "valueA": 80,
        "valueB": 100
      }
    }
  ],
  "sources": []
}