Generally if you have two numbers a and b the percentage change from a to b is given by the formula. Please do as follows. As soon as we apply the percentage format we can see the percent change values.
Click the Value from Cells checkbox.
New value old value ABS old value. The ABS function is used in Excel to change the sign of the number to positive or its absolute value. Percent Change New Value Old Value Old Value. In cell C2 double-click the fill handle to copy the formula down to the other rows.