See the solutions to these problems just after the percentage calculator below.

Percentage Calculator 1

What is % of ?

Answer:

Percentage Calculator 2

is what percent of ?

Answer: %

Percentage Calculator 3

is % of what?

Answer:

How to work out percentages - Step by Step

Here are the solutions to the questions stated above:

1) What is 100% of 40?

Always use this formula to find a percentage:

% / 100 = Part / Whole replace the given values:

100 / 100 = Part / 40

Cross multiply:

100 x 40 = 100 x Part, or

4000 = 100 x Part

Now, divide by 100 and get the answer:

Part = 4000 / 100 = 40

2) 100 is what percent of 40?

Use again the same percentage formula:

% / 100 = Part / Whole replace the given values:

% / 100 = 100 / 40

Cross multiply:

% x 40 = 100 x 100

Divide by 40 and get the percentage:

% = 100 x 100 / 40 = 250%

Sample percentage problems