## Percentage of a number using Excel

#### What is 7% of 2,500?

This is probably the easiest percentage calculation to do. Simply multiply the number by the percentage required.

In the example below, a tax rate of 7% is applied to an original amount of 2,500…

7% of 2,500 is 175.

To find the total amount payable, add the 2,500 and the 175…

Try it yourself using the examples below…

## Count everything in an area

#### How many entries have been completed?

In the example below, an ‘x’ has been used to indicate who has shown an interest in a neighbourhood watch scheme. To find out how many people are interested, the COUNT function might be used.

COUNT, like all functions, has a set of brackets that contain the details of the area containing the items to be counted.

The screen shot below shows the result of using COUNT on the column containing the ‘x’ characters.

The COUNT function only ever counts numbers. Since ‘x’ is a text character, the result comes out as 0.

To count numbers, text and pretty much anything else, use the COUNTA function. You can think of the A as meaning All or Anything.

The screen shot below shows the result of using COUNTA on the same column.

If dates had been used instead of a text character, the COUNT function would have been fine since properly entered dates are numbers in Excel!

Try it yourself using the examples below…

## Counting stuff in Excel

The COUNT function is used in Excel to find out how many items appear in a specific area of the worksheet.

Unfortunately for the unwary, COUNT only works for numbers. To get the most out of this family of functions, you need to know about COUNTA and COUNTIF as well

Try these short tutorials – the easiest one is at the top…

Count everything in an area
(How many entries have been completed?)

Only count specific items in an area
(How many of the items in this list are red?)

Count using two criteria
(How many hats in this list are red?)

## Percentages in Excel

The use of percentages in Excel are not the easiest concept to understand.

The percentages you use with Excel are just the same as the ones you might calculate with a calculator but it helps if you think about them slightly differently when calculating in Excel.

Always enter a percentage in Excel as a number followed by a percent sign. If you work this way, you don’t have to worry about all that multiplying and dividing by 100!

Try these short tutorials – the easier ones are at the top…

## Percentage of a number

(What is 7% of 2,500?)

## Increase a number by a percentage

(Increase 24,000 by 4%)

## Decrease a number by a percentage

(Calculate a discount of 9% on a purchase of 120)

## What percentage does a value represent of the total amount?

(7 answers out of 12 were correct. What is the percentage score?)

## Difference between two numbers as a percentage

(Customer numbers changed from 2,800 to 3,200. What percentage increase is that?)
(Customer numbers changed from 3,500 to 3,400. What percentage decrease is that?)