Question 443069
the easiest way to solve this problem, is to set it up as a proportion.  
is/of equals %/100.
 1) you want to find out the %, this will be your x.
 2) the of will be 100, and the is will be 20.
 3) set you your proportion equal to each other.
    20 = x
    ________
    100  100   
  4)  cross multiply 100x = 2000
  5)  get x by itself, divide both sides by 100
  6)  this will leave x = 2 
  7)  your answer will be 2%

I hope that this helps