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 90% of 30?

Always use this formula to find a percentage:

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

90 / 100 = Part / 30

Cross multiply:

90 x 30 = 100 x Part, or

2700 = 100 x Part

Now, divide by 100 and get the answer:

Part = 2700 / 100 = 27

2) 90 is what percent of 30?

Use again the same percentage formula:

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

% / 100 = 90 / 30

Cross multiply:

% x 30 = 90 x 100

Divide by 30 and get the percentage:

% = 90 x 100 / 30 = 300%

Sample percentage problems