Table:
field of research
2012
2019

total
% of total
total
% of total

all postdocs
2793
100
3335
100

science
2108
75.5
2132
63.9

agricultural sciences
0
3
0.1

biological and biomedical sciences
247
8.8
222
6.7

chemistry
496
17.8
467
14

computer and information sciences
123
4.4
180
5.4

geosciences, atmospheric sciences, and ocean sciences
240
8.6
262
7.9

mathematics and statistics
61
2.2
70
2.1

natural resources and conservationa
na
na
27
0.8

physics and astronomy
861
30.8
773
23.2

psychology
1
0

social sciences
6
0.2
7
0.2

other science fields
73
2.6
121
3.6

engineering
612
21.9
1028
30.8

aerospace, aeronautical, and astronautical engineering
17
0.6
30
0.9

agricultural engineering
0
0
0
0

bioengineering and biomedical engineering
17
0.6
18
0.5

chemical engineering
84
3
183
5.5

civil engineering
15
0.5
61
1.8

electrical, electronics, and communications engineering
42
1.5
97
2.9

engineering mechanics, physics, and science
20
0.7
140
4.2

industrial and manufacturing engineering
0
4
0.1

materials and metallurgical engineering
226
8.1
221
6.6

mechanical engineering
91
3.3
176
5.3

nuclear engineering
48
1.7
66
2

petroleum engineering
0
3
0.1

other engineering fields
52
1.9
29
0.9

health
30
1.1
1

multidisciplinary
31
1.1
113
3.4

non-science and engineering
0
15
0.4

field of research not known
12
0.4
46
1.4

Statement: the number of postdocs doing research in science fields in 2019 is similar to that in 2012, although the percentage has declined about 12 points.
Question: the number of postdocs doing research in science fields in 2019 is similar to that in 2012, how many percentage points has declined?
Answer: [11.6]