Percentage Formula: Percentages are a fundamental concept in maths, used frequently in daily life. It represents parts of a whole as fractions of 100. They're symbolised by the "%" symbol.

To write one number as a percentage of another, divide the first number by the second number to make a fraction, then multiply by 100.

In April 2015, CMS issued Ruling 1498-R2 addressing the calculation of the Medicare fraction of the disproportionate share hospital (DSH) adjustment for patient discharges prior to October 1, 2004.