Which is of more significance, an increase in price from $100
to $110, or an increase in $20 to $30 ? In both cases the
actual change is $10, but in the first one the fractional
change is 10/100, which is 1 / 10, and in the second one the
fractional change is 10 / 20, which 1 / 2. Although the
actual change is the same in both cases, the fractional change
is larger in the second case
The fractional change is actual change / original value.