Percentage of differance

Hi,

I have Faults repaired on time in A1 and faults repaired late in A2.
If i wanted to work out the percentage of faults repaired on time what do i need to do?
I have so far done =(A1+A2)/A2. but this is coming out incorrect. As well as giving the wrong answer, the formulae also falls over when A2 is 0.

TIA

Hello,

Percentage of faults repaired on time = Total number of faults repaired on time / Total number of faults repaired
=A1/(A1+A2)

Warm Regards,
Pritish

Hello,

Percentage of faults repaired on time = Total number of faults repaired on time / Total number of faults repaired
=A1/(A1+A2)

Warm Regards,
Pritish

Thank you.