Start with 500. Create a pattern that subtracts 4 from each number. Stop when you have 5 numbers

Starting with 500 and creating a pattern that subtracts 4 from each number would give us an expression of x = n - 4 where x is the next number in progression and n is the current number. Using this expression we get the following sequence out to 5 numbers. 500, (500-4) = 496, (496-4) = 492, (492-4) = 488, (488-4) = 484. The final sequence is 500, 496, 492, 488, 484.