How do you write \[66\% \] as a decimal?

Hint: In the given question, we have been given a percent number. We have to then convert the percent number into its decimal form. To convert to decimal, we just count two numbers from the left and put the dot to the right of the third number or to the left of the second number. This gives us the decimal form.

Complete step by step answer:
The given percent number is \[66\% \].
To convert to decimal, we just count two numbers from left and put the dot,
\[decimal = .66 = 0.66\]

Hence, \[66\% = 0.66\]

Note: We convert the given number decimal. So, to calculate any such basic things, we just need to know the meaning of the main words. Then we just apply the concept to the question and that is going to give us our answer.