Percentage difference equals the absolute value of the change in value, divided by the average of the 2 numbers, all multiplied by 100. We then append the percent sign, %, to designate the % difference. From Middle English difference, from Old French difference, from Latin differentia (“difference”), from differēns difference between revenue and profit (“different”), present participle of differre. Morphologically differ +‎ -ence.

• From Middle English difference, from Old French difference, from Latin differentia (“difference”), from differēns (“different”), present participle of differre.
• Morphologically differ +‎ -ence.
• Percentage difference equals the absolute value of the change in value, divided by the average of the 2 numbers, all multiplied by 100.
• From Middle English difference, from Old French difference, from Latin differentia (“difference”), from differēns (“different”), present participle of differre.