Percentage change between percentages

May 2010
2
0
Hi all,
Let's say that 20% of the population had a computer in 1990 and 35% of the population had a computer in 2000. What is the percentage change between 1990 and 2000?
Is it [(35-20)/20]*100=75% or 35-20=15%? :confused:
 
May 2010
2
0
Thanks slovakiamaths!
I know, i know.... i suck at math!! (Nod)