<PRE><B>Question 498980</B>
enrollment went from 6000 to 2000.
the decrease in enrollment is 4000
4000/6000 = 4/6 = 2/3 = .6666667
the percent decrease is 66.67%
you start with 6000
multiply that by .6667 to get 4000.
subtract that from 6000 to get 2000.
6000 * (1-.66667) = .33333 * 6000 which is equal to 1999.98
if you use 2/3 instead of .66667, then you get the correct answer.
rounding to .66667 will leave some error due to rounding.
the percent decrease is .66667 * 1005 = 66.67%</PRE>