Percentage Increase Calculator
From your rent to your pay, sums go up all the time. This tool tells you by how much in percent.
Type the old number and the new one and the percent jump appears.
Type a percent here to see what the old number grows in to. Leave 0 to use the two numbers above.
If the new number is smaller, the percent will be a drop. Use my percent decrease tool for that view.
How to use this tool
- 1New minus old gives the change.
- 2Change split by old times 100 gives the percent.
- 3A negative result means it went down, not up.
The math behind it
Increase percent = (new - old) / old x 100
Rent moves from 1,200 to 1,320. The gap is 120.
Split 120 by 1,200 and the rise is 10 percent.
Who this tool is for
I watch which tools folk open most, and this one gets used by the same kinds of people again and again. If any of these sound like you, you are in the right place.
- Folk facing rent or bill rises
- Sellers checking a price bump
- Any one tracking growth in any thing
My rent went up 120 a month and felt survivable. Then I ran the percent. It was 14 percent in one year, and something about that shape made me act in a way the raw cash never did. Numbers have moods. Percent is the mood that gets you moving.
Tips from me
- The old number is always the base. Getting that backwards is the top mistake.
- Use it on bills, prices and follows. Any where a number grows.
- Pair it with my percentage decrease tool to see the full swing.
Mistakes I see with this sum
These are the three slips I made my self or watch folk make most. Skip them and your number will be closer to the truth on the first try.
- 1Comparing against the new number instead of the old one. The old one is the base.
- 2Adding percents of growth on top of each other across years. They stack, not add.
- 3Ignoring what a small percent means in cash per year. Both views matter.
Two words worth knowing
Base year
The starting point the percent is measured from.
Ratio
How many times bigger the new number is. 1.5x is 50 percent more.
That is the whole page. The tool does the math, and the words above give it a shape. If a number still looks odd, change an input and watch what moves. Playing with the boxes taught me more than any guide did.
Common questions
+Why does the old number matter so much?
The percent is always against where you started. A jump from 10 to 15 is 50 percent, not 5.
+Can percent go over 100?
Yes. Double is 100 percent more. Triple is 200 percent more.
+What is the difference between percent increase and percent change?
Increase is the up case. Percent change can point up or down. The math is the same, the sign tells the story.
+Why does a 50 percent rise then a 50 percent fall not cancel?
The second move works on a new base. Up 50 then down 50 lands you 25 percent under the start.
+How do I convert the percent to money?
Type both numbers and read the gap line. The tool shows the raw difference as well as the percent.