Percentage Increase Calculator
Work out the percentage increase or decrease between two numbers, add a percent to a number, or find the original value before a change. For a territory or a business over several years, get the compound growth rate per year too.
Your numbers
Shows the change in percentage points too, e.g. a win rate from 20% to 25%.
Percentage increase
- Difference
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- New value as a multiple of the old
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The calculation runs in your browser and ParrotNotes does not store your numbers. They sit in the page address so you can bookmark or share the result.
How to calculate a percentage increase
Percent change = (new − old) ÷ old × 100. Revenue of $80,000 last year and $100,000 this year is ($100,000 − $80,000) ÷ $80,000 × 100 = 25% growth. A result below zero is a decrease: 100 down to 80 is −20%.
The base is always the number you started from. That is why a fall and the rise back are different percents: 100 to 80 is a 20% decrease, while 80 back to 100 is a 25% increase.
Percent change vs percentage points
When the two numbers are already rates (a win rate, a margin, a conversion rate), say which change you mean. A win rate that moves from 20% to 25% is up 5 percentage points. Measured against the old rate, that is a 25% increase.
Both are correct, and they are easy to mix up in a pipeline review. Report the points for a rate and the percent for an amount, or give both. The toggle under the two numbers shows both at once.
Price increases: the numbers for the customer letter
Going from $49 to $52 a unit is a 6.12% increase ($3 ÷ $49). If you announce a 4% increase instead, the new price is $49 × 1.04 = $50.96. To find last year's price from this year's, divide: $50.96 ÷ 1.04 = $49. Taking 4% off $50.96 gives $48.92, which is the classic mistake.
Percentages do not cancel. A 20% increase followed by a 20% decrease leaves 100 at 96, not 100, because the decrease is taken from the higher number. Keep that in mind when a customer asks to "undo" an increase with a discount of the same size.
Growth rate and CAGR for a territory or a year-over-year review
Year over year, the growth rate is the plain percent change between the two years. Over several years, the compound annual growth rate (CAGR) is the steady yearly rate that gets from the start to the end: (end ÷ start)^(1 ÷ years) − 1.
A territory that grew from $100,000 to $150,000 in three years grew 50% in total, or 14.47% a year compounded. Dividing 50% by three gives 16.67%, which overstates the yearly rate. Use the Growth rate mode with quarters or months for shorter periods.
Three mistakes to avoid
Dividing by the new number instead of the old one. Subtracting a percent to undo an increase (divide instead). Adding percentage changes from several years (+10% and +10% is 21%, not 20%).
For pay, the pay raise calculator shows a raise per hour, per paycheck and per year. For a percent off a price, use the discount calculator.
Before the review or the pricing conversation: How to run a sales QBR, Sales KPIs worth tracking, Handling price objections.
The percentage is the easy part. The conversation is the rest.
The number ends up in a quarterly review or in a price increase conversation with a customer. ParrotNotes records that conversation (with permission), writes the summary and drafts the follow-up email, so what was agreed is on paper the same day.
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- Margin and Markup CalculatorWork out margin, markup and selling price from cost, convert markup to margin, and see what a discount does to your margin before you quote.Open the tool
- Win Rate CalculatorGet your win rate and close rate from deals won, lost and open, and see what a few more points are worth in revenue.Open the tool