Let's go ahead and look at some percentage change problems.
We will use the formula new minus old ( if you don't like the term old you can use original)
over the old times 100 The new value is 41 nails, minus the original
which is 36 over the old or the original, which is 36.
41 - 36 equals 5, and 5 divided by 36 equals .14 and multiply this by 100 you get 14 percent.
Because it is positive it will be a percent increase.
Now let's look at one that is a percentage decrease.
We have a wooded toy with an original price of 14.99 and now it costs 11.18
The new price is 11.18 minus the old price of 14.99 over the old term of 14.99
In this instance, when you subtract you get a negative number of 3.81
This tells you it will be a percent decrease.
Now put 14.99 as the old price.
When you divide -3,81 by 14.99 you get negative .25 and multiply by 100 you get a percentage
decrease of 25 percent Let's work one more percentage change example.
Number two you start with 15 taxis and now you have 15.
I will take new minus old over old.
5 -15 divided by 15 5 - 15 = -10
-10 divided by 15 equals -.67 times 100 equals negative 67 percent
This will be a percent decrease Hope this helps with percentage change.
The formula is, new minus old over old times 100 and this will give you the percent increase
or percent decrease MooMooMath uploads a new Math video everyday