# Percentage Change Word Problems Calculator

> Calculate percentage increase or decrease and show the change relationship.

Page: https://askcalculators.com/calculator/percentage-change-word-problems-calculator/
Definition: https://askcalculators.com/calculator/percentage-change-word-problems-calculator/definition.json
JSON Schema: https://askcalculators.com/calculator/percentage-change-word-problems-calculator/schema.json
Version: 1.0.0
Maintained by: AskCalculators (software project; not a credentialed reviewer)
Qualified review: pending. Automated checks do not establish professional approval.
Page status: Live
Review status: Pending

## Use
Open the calculator page and enter values. Query-string parameters can restore and bookmark a calculation.
Example: https://askcalculators.com/calculator/percentage-change-word-problems-calculator/?originalValue=80&newValue=100

## Inputs
- originalValue: Original value; type=number; required; default=80
- newValue: New value; type=number; required; default=100

## Outputs
- percentageChange: Percentage change; format=percent; primary
- absoluteChange: Absolute change; format=number
- changeType: Change type; format=text
- multiplier: New/original multiplier; format=number

## Formula
percentage change = (new − original) ÷ |original| × 100%

## Rules
- Empty optional inputs are undefined, not zero.
- Hidden conditional inputs are ignored.
- Do not invent missing required inputs.