pre_text: Significant Suppliers We purchase a significant amount of our inventory from certain manufacturers or suppliers including components, assemblies and electronic manufacturing parts. The inventory is purchased under standard supply agreements that outline the terms of the product delivery. The title and risk of loss of the product generally pass to us upon shipment from the manufacturers’ plant or warehouse. Some of these manufacturers accounted for more than 10% of our purchases and accounts payable as follows: We are currently reliant upon these suppliers for products. Although we believe that we can obtain products from other sources, the loss of a significant supplier could have a material impact on our financial condition and results of operations as the products that are being purchased may not be available on the same terms from another supplier.
table: Year Ended February 28,
table: 2019 2018 2017
table: Inventory purchases:
table: Supplier A 31% 33% 34%
table: Supplier B 20% 16% 14%
table: Supplier C 6% 9% 11%
table: As of February 28,
table: 2017 2019 2018
table: Accounts Payable:
table: Supplier A 30% 40% 33%
table: Supplier B 18% 16% 18%
question: Analyse this data from a financial earnings document. What is the percentage change between inventory purchases from Supplier B from 2017 to 2018?