Adress was reduced from $100 to $85. express the discount as a % of the original price

The discount is $100 -85 = $15. As a fraction of the original price, the discount is
  $15/$100 = 15/100 = 15%


It can be helpful to think of "%" as another way to write "/100".

Ifound this on google “a skewed (non-symmetric) distribution is a distribution in which there is no such mirror-imaging. a "skewed right" distribution is one in which the tail is on the right side. a "skewed left" distribution is one in which the tail is on the left side. the above histogram is for a distribution that is skewed right.” i hope this you for what your looking for