Can anyone please clarify, in general when an investment reports performance returns on your monthly statement, it typically shows them at

**'3 Months, or QTR, Year-To-Date, 1 Year, 3 Years, 5 Years, Since Inception.**. Hence, if the statement is covering the period 3/1/2019 to 3/31/2019, is it the case that

**1 Year**is the performance from 3/31/2018 to 3/31/2019 using the account value on (3/31/2019 minus the value on 3/31/2018) divided by the account value on 3/31/2018? Example, On 3/31/2018 value is $100K, on 3/31/2019 value grew to $125K, thus, 25K divided by $100K equals $25K then divided by $100K equals .25 or 25%?

If correct, to do the 3-Year and 5-Year, this process is repeated for EACH year from the calendar dates back 3 years and 5 years then the average taken for those 3 and 5 year data points?

In addition to confirming the formula, I am also interested in knowing the dates to use. So, is it correct if starting with a statement ending 3/31/2019, I would need to look at account values on statements ending 3/31/2018, 3/31/2017, and so on back to 3/31/2014?

When I run the numbers like this, my numbers are about 2% lower than those reported on my statement. I added back advisory fees into the account value that were taken out during each year but did not add back in expense ratio impact.

Thanks to anyone who can follow this and provide some insight!