Ignore a minus sign because neither value is more important so being above or below does not make sense. Calculate the difference subtract one value form the other ignore any negative sign. Divide the difference by the average.
The topic is of extreme importance and forms a major part of questions in most competitive exams.
Apply 10 to 100 and see how each value was calculated. Method 2 Step 1. 10 200 x 100 5. Learn the basics of percentages.