Question: how to do percentage difference math?
Answer: Step 1: The difference is 4 − 6 = −2, but ignore the minus sign: difference=2.
Step 2: The average is (4 + 6)/2 = 10/2 = 5.
Step 2: Divide: 2/5 = 0.4.
Step 3: Convert 0.4 to percentage: 0.4×100 = 40%.