excel formula to find difference between positive and negative numbers
One common way to calculate percentage change with negative numbers it to make the denominator in the formula positive. The ABS function is used in Excel to change the sign of the number to positive, or its absolute value. Here is the formula that is commonly used: =(new value â old value) / ABS(old value) Technically this formula works to produce a percentage change number with the correct sign (positive/negative).