Question 752753
Formula for calculating percentage gain is:

{{{(P/CP)*100}}}% <br /> **Do not change the "%" sign**

Where,
{{{P = Profit;}}}
{{{CP = Cost Price}}}

From question,
{{{CP = $400}}}
{{{P = SP - CP = $480- $400 = $80}}}

%Gain = {{{(80/400)*100}}}%<br />
%Gain = {{{(80*100)/400}}}%<br />
%Gain = {{{8000/400}}}%<br />
%Gain = {{{20}}}%


I hope this helped. If you don't understand, feel free to ask me