how to find percentage error

Sure, here are the steps to find the percentage error:

1. First, you need to find the difference between the experimental value (the value that you got from an experiment or a test) and the theoretical value (the value that you should ideally get). This is done by subtracting the theoretical value from the experimental value.

2. Next, you take the absolute value of this difference. The absolute value of a number is its value without regard to its sign. So, if the difference you got in step 1 is negative, you ignore the negative sign.

3. Then, you divide this absolute difference by the theoretical value. This gives you the error as a fraction of the theoretical value.

4. Finally, you multiply this fraction by 100 to convert it into a percentage. This is your percentage error.

So, the formula for percentage error is:

Percentage Error = (|Experimental Value - Theoretical Value| / Theoretical Value) * 100%