Answer :

To work out what percentage a number is of a larger number the following maths has to be done. 30 divided by 360= 0.0833333 recurring. then you multiply your answer by 100 which in this case gives you 8.3333... which is your answer in percent, so your answer is 8.33% 
p%[tex]= \frac{p}{100} [/tex]

[tex] \frac{p}{100}*360=30 [/tex] ⇒ [tex]3,6p=30[/tex] ⇒ [tex]p= \frac{30}{3,6} =\boxed {8, (3) }[/tex]