Percentage Change Calculator

Calculate percent change between an original value and a new value.

Author

Prof. Kenji Tanaka

Math editorial contributor

Japanese materials scientist at Kyoto University, known for breakthroughs in sustainable polymer research

Reviewed by

Dr. Samuel Okafor

Math content reviewer

Nigerian-Canadian data scientist with a PhD from the University of Toronto, building ML models for early cancer detection

Last updatedFebruary 22, 2026

PublishedFebruary 22, 2026

Table of Contents

  1. Reference values
  2. Calculator
  3. Reference table
  4. FAQs
  5. Methodology and review
  6. Related conversions

50 to 55 =

10 percent

Representative value from the Percentage Change Calculator reference table.

Reference Values

Browse 25 reference values with individual detail pages for quick lookup.

Browse all reference values

Percentage Change Calculator

Calculate percent change between an original value and a new value.

Calculated Result

Reference Table

Use this complete table for quick lookup and internal linking to specific value pages.

Percentage Change Calculator Reference
ScenarioPercent Change
10 to 8-20 percent
10 to 9-10 percent
10 to 1110 percent
10 to 12.525 percent
10 to 1550 percent
25 to 20-20 percent
25 to 22.5-10 percent
25 to 27.510 percent
25 to 31.2525 percent
25 to 37.550 percent
50 to 40-20 percent
50 to 45-10 percent
50 to 5510 percent
50 to 62.525 percent
50 to 7550 percent
100 to 80-20 percent
100 to 90-10 percent
100 to 11010 percent
100 to 12525 percent
100 to 15050 percent
250 to 200-20 percent
250 to 225-10 percent
250 to 27510 percent
250 to 312.525 percent
250 to 37550 percent

Frequently Asked Questions

Common questions about Percentage Change Calculator, formulas, and typical use cases.

What does the Percentage Change Calculator calculator do?

It calculates comparing growth or decline between two periods, prices, or measurements from the values you enter.

What formula does the Percentage Change Calculator calculator use?

Percent change = ((new - original) / original) × 100.

What inputs are valid?

Enter a non-zero original value. The new value can be any finite number.

When would I use this?

comparing growth or decline between two periods, prices, or measurements

Methodology and Review

This page combines a live calculator, precomputed reference values, and FAQ content from the same conversion definition to reduce mismatch between calculator output and lookup tables.

Editorial metadata (author, reviewer, and update date) is rendered on the page and in structured data. See our editorial policy, review process, and corrections policy.

For compliance-sensitive work, verify final values against project requirements, governing standards, and manufacturer documentation.