Table:
June 30,

($ in millions)	2019	2018

Raw materials and supplies	$169.8	$157.5

Work in process	425.7	372.5

Finished and purchased products	192.2	159.2

Total inventory	$787.7	$689.2

Answer the following question considering the given table and text, feel free to explain how you reached the answer, then present the result in JSON format {"answer": ["ANSWER"], "scale": "SCALE"} (leave scale empty if none).

Background:
6. Inventories
Inventories consisted of the following components at June 30, 2019 and 2018:
If the FIFO method of inventory had been used instead of the LIFO method, inventories would have been $178.4 million and $210.3 million higher as of June 30, 2019 and 2018, respectively. Current cost of LIFO-valued inventories was $793.0 million at June 30, 2019 and $760.8 million at June 30, 2018. The reductions in LIFO-valued inventories decreased cost of sales by $0.0 million during fiscal year 2019 and $0.6 million during fiscal year 2018 and $0.0 million during fiscal year 2017.

Question: What was the percentage change in Raw materials and supplies in 2019 from 2018?

((169.8-157.5)/157.5) * 100, therefore {"answer": "7.81", "scale": "percent"}