Percentage Increase Calculator
Find out exactly how much something went up, as a percentage. Works for salary, price, score, or any two numbers.
How It Works
You enter two numbers: the original value and the new, higher value. The calculator subtracts the original from the new, divides by the original, then multiplies by 100. That gives you the percentage increase.
Percentage Increase = (Increase Amount / Original Value) × 100
The calculator also shows you the raw increase amount and the multiplier (how many times bigger the new value is), so you get the full picture in one place.
When People Actually Search This
Salary increase and pay raise
This is the most common use case. You were earning $48,000. You got a raise to $52,500. What percentage raise is that? ((52,500 – 48,000) / 48,000) x 100 = 9.375%. You can tell your colleague, put it in a negotiation, or just feel good about the number in under 10 seconds.
Price increases and inflation checks
Your rent went from $1,200 to $1,380 a month. How much is that as a percentage? 15% increase. If your salary only went up 5%, you can see immediately that you’re falling behind on housing costs. That’s a real decision-driving number.
Business and sales reporting
Last month your store made $43,000. This month it made $51,000. What’s the revenue growth? 18.6%. You can put that in a report, a slide deck, or an email to investors without opening Excel.
Checking subscription or product price hikes
A streaming service was $9.99 per month and just raised prices to $13.99. How much of an increase is that? 40% increase. That’s a number worth knowing when you’re deciding whether to keep the subscription.
Investment and savings growth
You invested $5,000 and it’s now worth $6,750. Your portfolio grew by 35%. This calculator gives you that number instantly, without needing a finance app or spreadsheet.
Table of Truth: Common Increases and Results
Use this table to sanity-check your result before or after using the calculator.
| Original | New Value | % Increase | Amount Up |
|---|---|---|---|
| 50 | 60 | 20.00% | +10 |
| 100 | 125 | 25.00% | +25 |
| 200 | 240 | 20.00% | +40 |
| 1,000 | 1,100 | 10.00% | +100 |
| 48,000 | 52,500 | 9.38% | +4,500 |
| 1,200 | 1,380 | 15.00% | +180 |
| 9.99 | 13.99 | 40.04% | +4.00 |
| 5,000 | 6,750 | 35.00% | +1,750 |
| 80 | 100 | 25.00% | +20 |
| 250 | 500 | 100.00% | +250 |
Common Mistakes People Make
Real-Life Examples
Negotiating a salary raise
An employee earning $72,000 is offered a raise to $76,500. That’s a 6.25% increase. The industry standard for that role in their city is 8-10%. With that number in hand, they can go back to their employer and make a case for a higher raise backed by a specific percentage gap.
Landlord raises rent
A tenant’s rent increases from $950 to $1,100 per month. That’s a 15.79% increase. The local rent control guideline only allows 5% per year. With the exact percentage from this calculator, the tenant has the number they need to push back legally.
Business tracking month-on-month growth
An e-commerce store had revenue of $28,400 in March and $33,600 in April. That’s an 18.31% increase. The team reports this in their weekly meeting, sets a target to maintain 15% month-on-month growth, and uses the same calculator every month to track it.
