One quantity is how much % of other

If two values are p% and q% more than a third value, then the first is

100 × (100 + p) / (100 + y)% of the second.

Proof:

Let third value bee 100.

Then,

first value is 100 + p% of 100 = 100 + p

second value is 100 + q% of 100 = 100 + y

Hence, percentage of first value in second is 100 × (100 + p) / (100 + y)% 

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Posted in: Percentage,Percentage Relationship