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 9% of 42?

Always use this formula to find a percentage:

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

9 / 100 = Part / 42

Cross multiply:

9 x 42 = 100 x Part, or

378 = 100 x Part

Now, divide by 100 and get the answer:

Part = 378 / 100 = 3.78

2) 9 is what percent of 42?

Use again the same percentage formula:

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

% / 100 = 9 / 42

Cross multiply:

% x 42 = 9 x 100

Divide by 42 and get the percentage:

% = 9 x 100 / 42 = 21.428571428571%

Sample percentage problems