How do I calculate a percentage of a percentage?

Ex: 78% of people surveyed said they have an internet connection in their home, and out of those, 85% said that they also have a cell phone. Of the people surveyed, what percentage of them have both an internet connection and a cell phone?How do I calculate a percentage of a percentage?
If nbr of people surveyed is x then

0.78x have internet conection

And 0.85 of people ALSO have a cell phone

==%26gt; 0.85 * (0.78x)

==%26gt; 0.663x have internet connection AND a cell phone

==%26gt; 66.3%How do I calculate a percentage of a percentage?
78% * 85%

= (78/100) * (85/100)

= 0.78 * 0.85

= (78 * 85) / (100 * 100)

= 6630 / 10000

= 0.663

= 66.3%How do I calculate a percentage of a percentage?
85% of 78%=.85 x 78%=66.3%
percentage means how much out of 100



here suppose surveyed people=100



78% means 78 people out of100people



out of this 78 or 85% of 78 are using cellphone. ,that is 78*85/100=66.3%of the total surveyed people

so 66.3% of the surveyed people have both phone and internet