How to solve this problem
A step by step guide
Calculating percentage increase or decrease is a useful way to track data
points over time. If you have two numbers, their relationship can be described
by the percentage change between them. The reason this is an important metric
is because it is normalized. Percentage increases and decreases can be slightly
confusing at first, but become much more simple once you understand how they
are calculated. To calculate percentage change, we will use three operations.
As usual with percentage problems, these operations will involve basic
arithmetic. In this case, we want to calculate the percentage increase or
decrease from 15 to 8249. Here are the steps:
Step 1: Subtract 15 from 8249
The first step is to find the difference between the new number (the
second input, 8249) and the old number (the first input, 15). We can do this by
simply subtracting 15 from 8249:
8249
−
15
=
8234
Step 2: Divide 8234 by 15
The second step is to divide the result of step 1 by the original number.
This is done to compare the difference to the original number. The equation for
this is quite simply:
8234
15
=
8234
÷
15
=
548.93333333333
Step 3: Multiply 548.93333333333 by 100
The final step of this calculation is to multiply the result of step 2 by
100 to turn it into a percentage (%). This equation for this is simple:
548.93333333333
×
100
=
54893.33
And there you have it! These three steps can be used to calculate the
percentage increase or decrease of any two numbers. Give it a try with another
set of numbers.
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