title: convert negative decimal to binary using 8 bits
body: <p>(Not sure if I am allow to ask a question like this but will delete if asked)
  Convert -25 into binary representation using 8 bits and 2's complement format to represent a negative number. So far I got 11001.</p>
  
  <p>I tried to google methods but I am not sure how to do it using the 8 bits way.</p>
  
  <p>This question is not using code, just conversions but from what I did was
  convert it to binary which was 11001 then I added 3 zero's to make it 8bits (assuming that is correct) 00011001 then I did 1's complement 11100110 and 2's complement by adding 1 which equals 11100111.</p>
  
  <p>I am not sure if that is correct.</p>