Percentage difference tells us at what extent any reference value differs from the measured value in percentage. It gives the difference between the two numbers given divided by their averages.The percentage difference is given by
Percentage difference = $\frac{Reference\ Number - Relative\ Number}{\frac{Reference\ Number + Relative\ Number}{2}}$ $\times$ 100 %
In terms of input reference number V1 and relative number V2 it is given by
Percentage difference = $\frac{V_1 - V_2}{\frac{V_1 + V_2}{2}}$ $\times$ 100 %
Percentage difference Calculator is a online tool to calculate the percentage difference. You just have to enter the given values V1 and V2 and get its percentage difference instantly.

Lets see how to find the percentage difference :
Step 1 :
Read the given problem and note down the reference number V1 and relative number V2.
Step 2 : To calculate the percentage difference use formula
Percentage difference = $\frac{V_1 - V_2}{\frac{V_1 + V_2}{2}}$ $\times$ 100 %
Substitute the values in above formula and get the answer.