---
title: "Discount and Percent Change Calculator | MCC Solutions"
description: "Find a sale price after one or two discounts and sales tax, or the percent change between two numbers. Free and private, runs in your browser."
url: "https://mcc-solutionsnj.com/bookkeeping/discount-and-percent-change-calculator"
---

Free tool

# Discount and percent change calculator

Enter a price and a discount to see the sale price and what you save. Add a second discount or sales tax if you need to. Or compare two numbers to see the percent change.

[![Intuit ProAdvisor Gold tier badge](/img/credentials/intuit-proadvisor-gold.png)](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77)Gold tier in Intuit's ProAdvisor program. [See my Intuit listing](https://proadvisor.intuit.com/app/accountant/search?searchId=matthew-coleman77)

Keeping your own books? Tallyfinch does invoices, bank import and reports on your computer. [See Tallyfinch](/bookkeeping/mcc-books-downloadable-bookkeeping-software)

Discount

Original price ($)

Discount (%)

Second discount (%) (optional)

Sales tax (%) (optional)

Percent change

Starting value

New value

Prefer to talk it through? [Take the free books check](/bookkeeping/health-check) or [contact us](/contact).

Share

## Put this tool on your own site

Free to use. Paste this where you want it to appear. It runs in the visitor's browser, so nothing they enter is sent to us.

[See every calculator you can embed](/embed)

How it works

## How it works

The sale price is **price x (1 - discount)**. A second discount applies to the already reduced price. Percent change is **(new - old) / old x 100**.

FAQ

## About this calculator

**How do I calculate a discount?**

Multiply the price by one minus the discount percent. A 20% discount on $100 is $100 times 0.80, or $80.

**Why do two 20% discounts not equal 40%?**

The second discount applies to the already reduced price. $100 less 20% is $80, and 20% off that is $64, so the total discount is 36%.

**How do I calculate percent change?**

Subtract the starting value from the new value, divide by the starting value and multiply by 100. Going from 80 to 100 is a 25% increase.

**Can the calculator add sales tax?**

Yes. Enter your sales tax rate and it adds tax to the sale price.

**Is anything saved?**

No. The math runs in your browser and nothing you enter is sent to us.

Add or remove sales tax with the [sales tax calculator](/bookkeeping/sales-tax-calculator), price for a target margin with the [margin and markup calculator](/bookkeeping/profit-margin-and-markup-calculator), or compare sizes with the [price per unit calculator](/bookkeeping/price-per-unit-calculator). More free tools: [Short-term rental nightly rate for a profit target calculator](/bookkeeping/airbnb-nightly-rate-for-profit-target-calculator), [Menu item food cost percentage calculator](/bookkeeping/menu-item-food-cost-percentage-calculator), [Overtime pay calculator](/bookkeeping/overtime-pay-calculator), or [see all free tools](/free-tools).

Free

### Month-End Close Checklist (PDF)

The five-day close, one page to print. Enter your email and we send a link to confirm it is yours, then the download. We may email you about new toolkits, and every email has an unsubscribe link.

General information, not tax or legal advice. [How we write and check our tools](/editorial-standards).

Do it yourself

### Break-Even and Pricing Workbook

Enter your fixed costs and what each product or service costs and sells for, then see the sales you need and the price that reaches your target margin.

[See what's inside ($24)](/toolkits/break-even-and-pricing-workbook) [Free sample](/toolkits/break-even-and-pricing-workbook#free-starter)14-day full refund

Tallyfinch

### Books you keep on your own computer

Tallyfinch does invoices, bills, bank import, reconciliation and the main reports, in a file you own. $99 once, then $5 a month for updates; the app keeps working if you stop the plan. It does not do payroll or sales tax filing. The free download records up to 60 entries.

[See Tallyfinch](/bookkeeping/mcc-books-downloadable-bookkeeping-software) [Download it free](/tools/pro/trial/mccBooks) [Compare the three apps](/software)

## Want to know if a sale still makes money?

[See bookkeeping](/bookkeeping/)[Call (908) 444-6373](tel:+19084446373)