Table:
1980 to 2000
2000 to 2013

percent

real gross output
1.0
1.1

contributions

labour input
-0.3
0.4

capital input
-0.2
2.1

natural capital input
0.0
0.1

intermediate input
0.0
1.2

mfp growth
1.6
-2.7

addendum

real output growth
1.0
1.1

labour input growth
-1.2
2.9

capital input growth
-0.5
6.6

natural capital input growth
1.1
0.9

intermediate input growth
-0.1
3.6

mfp growth without natural capital
1.6
-4.1

Statement: mfp growth had a decline of 4.1% per year from 2000 to 2013.
Question: what's the percent that mfp growth had of the decrease from 2000 to 2013?
Answer: [4.1]