Example 1
- Old value: $5,000
- New value: $5,750
+15.00%
A classic $750 raise on a $5,000 salary - a 15% increase.
Percentage change calculator
Type the old value and the new value. The calculator computes (new minus old) ÷ |old| × 100%. From 5000 to 5750 you get +15.00%. From 250 to 200 you get −20.00%.
We run (new − old) ÷ |old| × 100%. Positive = increase, negative = decrease. Handy for raises, prices, traffic, or sales.
Result
Enter an old and a new value.
How results are calculated
Percentage change: (new value − old value) ÷ |old value| × 100%. From 5000 to 5750 the gap is 750, 750 ÷ 5000 = 0.15, +15.00% on the page. From 250 to 200 the gap is −50, −50 ÷ 250 = −0.2, so −20.00%.
Plus is an increase, minus is a decrease. The raw gap is plain subtraction: 5750 minus 5000 is 750, with no percents. 12,000 visits to 18,000 is +50%, because 6000 arrived on a 12,000 base.
The fields are Old value and New value. Type 5000 and 5750, then click Calculate. A comma and a period both parse. Old equal to zero does not run: the calculator will not fake a divide by zero. From 84 to 36 the drop is (36 − 84) ÷ 84, about −57.14%.
Here 750 against 5000 becomes +15%. 15% of 5000 is 750, an amount. Here 750 against 5000 becomes +15%. Percentage points are a third scale: 10% to 15% is +5 p.p., and relatively +50%.
Both values need the same unit: money with money, counts with counts. The header money label does not convert 5000. Without old or new, nothing computes.
144 to 96 is −33.33%. 35 to 49 is +40%. 120 to 45 is −62.50%. Check the 5000 and 5750 example first.
How to use
- Type the old value, for example 5000.
- Type the new value, for example 5750.
- Click Calculate. 5000 to 5750 is +15.00%. 250 to 200 is −20.00%.
- Old equal to zero does not compute: that is divide by zero. Type a nonzero base.
- The bare amount 15% of 5000 lives on percentage of a number. Here you ask how two values changed.
+15.00% from 5000 to 5750
The calculator computes (new minus old) ÷ |old| × 100%. From 5000 to 5750 you get +15.00%. From 250 to 200 you get −20.00%.
- %
- The change result. (5750 − 5000) / 5000 × 100 = +15.00. (200 − 250) / 250 × 100 = −20.00. Not 15% of 200 = 30.
- +15.00%
- First example: a 750 raise on 5000. The second example is −20.00% from 250 to 200.
Usage examples
Example 2
- Old value: $250
- New value: $200
−20.00%
A product discounted from $250 to $200 - a one-fifth decrease.
Example 3
- Old value: 12,000 visits
- New value: 18,000 visits
+50.00%
Traffic grew one and a half times over - a typical result after a marketing campaign.
Related calculators
FAQ
What percent from 5000 to 5750?
The change is +15.00%. The difference 750 divided by the base 5000 is the classic raise from the example on the page.
What about 250 to 200?
You get −20.00%. A drop of 50 from a base of 250 is one fifth down, and the minus speaks about direction.
How is percentage change computed?
The formula is (new minus old) ÷ |old| × 100%. Plus is a rise, minus is a fall, and the bars on old keep the base positive.
How is this different from 15% of 5000?
15% of 5000 is 750 on the percent-of-a-number page. Here those 750 against 5000 are a +15% change, an old and new pair.
What if the old value is zero?
There is no result. Division by zero. The calculator reports an error instead of inventing a percent from an empty base.
What about 12,000 to 18,000 visits?
The change is +50%. You gained 6000 on a base of 12,000, half of the old traffic.
How is that different from percentage points?
From 10% to 15% is +5 percentage points, while the relative change is +50%. This calculator computes the relative change, not the points.
What about 84 to 36?
About −57.14%, because (36 − 84) ÷ 84. From 35 to 49 the same card shows +40%.
Does a comma in 5750,5 work?
Yes. A comma and a period are the same decimal. The formula does not require whole numbers.
Does 15% of 200 belong here?
No. One number and a percent live on the percent-of-a-number page. Here you need a pair: old and new.
Knowledge sources
The calculator computes the same formula as the definition below.
Page updated in 2026.