How this calculation works
You can multiply more nested shares by repeating the same operation, provided each percentage uses the previous group as its denominator.
THE FORMULA
Combined percentage = p × q / 100A worked example
20% of the 30% subgroup is 6% of the original total.
Good to know
The second percentage is measured within the first group.
Reference: OpenStax Prealgebra (opens in a new tab) ↗
Read the result
Find the original share represented by a percentage taken from another percentage.
The primary result is labeled “Share of original total (%)”. Keep the input definitions in view when comparing this result with another method.
Try a related calculation
The second percentage is measured within the first group.
For a related exercise, try the fraction calculator.
A few questions, answered
How can I check the default inputs by hand?
20% of the 30% subgroup is 6% of the original total.
Which rule does this calculator apply?
Combined percentage = p × q / 100