Question 935697
your decrease is 2000 - 1450 = 550.


the rate of decrease is equal to 550 / 2000 = .275


the decrease is then calculated from the rate as .275 * 2000.


the rate is normally described as a function of time, like one year or two years or 10 years or 3 months or 5 days or whatever.


assuming that the time interval between when the value was 2000 and 1450 was 1 year, then the rate of decrease would be .275 per year.


if the rate of decrease was constant, then 200 would become 2000 - .275 * 2000 = 1450 after the first year and then become 1450 - .275 * 1450 = 1051.25 after the second year, etc.