How do you find percent change?

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Answer 1 · 2016-11-29T11:04:08

See explanation.

I assume you have 2 measurments start - $x_s$ and finish - $x_f$ .

To calculate the change you use this formula:

$c=|x_f-x_s|/x_sxx100%$

Example:

Let's say that a temperature changed from $300K$ to $330K$ . To calculate the percent change I use the formula:

$c=|330-300|/300xx100%=30/300xx100%=1/10xx100%=10%$

From these calculations we see that the temperature change (increase) is $10%$