In 2012, 10% of jobs were in the manufacturing industry, this means that:

10 jobs out of every 100 jobs is a manufacturing job. That's like having a block of 100 cubes and having 10 filled in.

1 job out of every 10 jobs is in manufacturing. That's like having a block of 10 cubes and having 1 filled in.

100 jobs out of 1000 jobs is in manufacturing. That's like having a block of 1000 cubes and having 100 filled in.

All these statements are the same, because the math says that 10% is equal to 10 out of 100 which is equal to 1 out of 10 which is equal to 100 out of 1000.