For how to find a percentage of a percentage of a number easily, you solve the percent question in two steps.

a) Multiple the numbers given in the percentage question

b) Place decimal point after counting percent symbol (%) in the question

Example1

What is 20% of 20% of 20?

Solution

Multiply 20 x20 x 20 = 8000

See percent symbol (%) has been used 2 times in percent question. It means [^{1}/_{100}] x [^{1}/_{100}]. That is one % symbol means 2 zero whereas, 2 % symbol means 4 zeros. These 4 zeros will determine position of decimal point. Now start counting from right of 8000 and place decimal point after 4^{th} digit. The answer will be 0.8000 or 0.8

Example 2

Find 30% of 40% of 50

Solution

Multiply 30 x 40 x 50 = 60000

Now count the Percent symbol (%) in percent question. Their number is 2. It means 4 zeros. Thus start counting from right of 60000 and place decimal point after 4^{th} digit. It will look like 6.0000. So answer is 6.