math problem, quick help.

[jerrygarcia]

If I have a 1st year number of $2323.14 and a second year total of $437.10, what percentage of decrease do I have from the first year to the second year?

What is your formula? Increase or decrease.

[Blazer06]

2323.14 - 437.10 = 1886.04
1886.04 / 2323.14 = 0.811849479583666933546837469975981
So you had a 81.1849479583666933546837469975981% decrease in sales, net profits, or whatever from the first to second year.

So thats saying that you only made 18.8150520416333066453162530025% of what you had in the first year.

I think that is what you wanted.


Blaze

[jerrygarcia]

That is what I came up with and wanted to be sure of the formula that I was using.

1st year is the base, and anything after that, divide the first # into it(second #, higher or lower) and it will show you the %?

[Blazer06]

I took the first year cost and subtracted the second year cost. Then took the answer and divided it by the first year cost.

Unless you made more the second year in which case you would do second year minus the first year. i.e

first year = 100
second year = 166
second - first = 66
66 / 100 = .66
66% INcrease


Blaze

[jch216]

(P)(B)=A

Percentage x Base = Amount

You need the percentage of decrease...it's unknown, Let it = X.
Your base amount is $2323.14.
And your Amount in dollars after the decrease is $437.10.

sooooo,

2323.14(x) = 437.10

Divide both sides by the coefficient of X. This leaves you with....

0.18815052041633306645316253002402

To change this to a percentage just multiply by 100.

18.815052041633306645316253002402%
or approximatly
18.82%

[zskillz]

Originally posted by jch216
(P)(B)=A

Percentage x Base = Amount

You need the percentage of decrease...it's unknown, Let it = X.
Your base amount is $2323.14.
And your Amount in dollars after the decrease is $437.10.

sooooo,

2323.14(x) = 437.10

Divide both sides by the coefficient of X. This leaves you with....

0.18815052041633306645316253002402

To change this to a percentage just multiply by 100.

18.815052041633306645316253002402%
or approximatly
18.82%

he asked for the percent decrease.... this is not the correct answer. 1-18.82% is the correct answer as blaze06 said, I believe.

-Z

[jch216]

Oops, your right. I had my Amount value wrong in the equation.

Here is the correct one:

(P)(B)=A

Percentage x Base = Amount

You need the percentage of decrease...it's unknown, Let it = X.
Your base amount is $2323.14.
And your Amount of the decrease is $1886.04.

sooooo,

2323.14(x) = 1886.04

Divide both sides by the coefficient of X. This leaves you with....

0.81184947958366693354683746997598

To change this to a percentage just multiply by 100.

81.184947958366693354683746997598%
or approximatly
81.2%

[jch216]

Yeah,

Percentage and Amount are related.

If you want the Percentage decrease, you have touse the Amount of the decrease in the formula. If you want Percentage remaining, you use the Amount remaining in the formula.

Sorry about that. Got in a hurry.