Who is asking: Other


Hi Remo, When you report something as a percentage you should ask yourself "percentage of what?" The 50% completion rate in 200 is 50% of 600. The 20% completion rate in 2001 is 20% of 100. If you simply subtract the two percentages to get 30% then it's 30% of what? This difference doesn't make any sense. You say that you want the percentage change. The completion rate started at 0.5 and changed to 0.2 so what you need is to express this change as a percentage of where it started. That is you want 0.2  0.5 = 0.3 as a percentage of 0.5.
and thus the completion rate decreased by 60% from 2000 to 2001. Cheers, 

