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 40% of 30000000?

Always use this formula to find a percentage:

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

40 / 100 = Part / 30000000

Cross multiply:

40 x 30000000 = 100 x Part, or

1200000000 = 100 x Part

Now, divide by 100 and get the answer:

Part = 1200000000 / 100 = 12000000

2) 40 is what percent of 30000000?

Use again the same percentage formula:

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

% / 100 = 40 / 30000000

Cross multiply:

% x 30000000 = 40 x 100

Divide by 30000000 and get the percentage:

% = 40 x 100 / 30000000 = 0.00013333333333333%

Sample percentage problems