# How to find the figure from knowing the original figure and percentage increase

• Oct 21st 2010, 08:45 AM
zigojacko
How to find the figure from knowing the original figure and percentage increase
Hello all,

This is probable really simple for most of you but I need to work something out and wondered if someone could lend a hand please.

I have a figure. 163

I need to know a 12.3% increase of 163. I don't have any other numbers you see, that's why I'm doing the sum.

7. 163 (+12.3%)
6. --- (+10.4%)
5. --- (+8.5%)

And so on... I just can't for the life of me figure out how to find the figure that 12.3% more than 163 is. I presume I need to convert into decimals or something?

Any help greatly appreciated.

Thanks :)
• Oct 21st 2010, 09:00 AM
Unknown008
Since you are increasing it by a certain percentage, just multiply it by (100 + percentage)/100.

Eg.

Increase 163 by 12.3%:

$163 \times \dfrac{100 + 12.3}{100} = 183.049$

Do the same for the rest.

In case it's a decrease, remove the percentage from 100.
• Oct 21st 2010, 09:42 AM
zigojacko
That is brilliant, you're a life saver.

Thank you ever so much.
• Oct 21st 2010, 09:46 AM
Unknown008
You're welcome (Smile)