The answer to this is 0.066. Anything that is related to decimals can be complicated for some people especially those who do not like computing decimals at all but this time, computing the two decimal numbers are easy to do because you simply need to subtract them.
The moment that you get the right answer, you may also feel better. Learning how to compute decimals may be complicated to do in the beginning but as long as you know the rules and you will also do your best to practice computing, you will get the computation right each time.