($ in millions)
At December 31:
2019
2018
Current assets
$38,420
$49,146
Current liabilities
37,701
38,227
Working capital
$   718
$10,918
Current ratio
1.02:1
1.29:1

text: IBM Working Capital
text: Working capital decreased $10,200 million from the year-end
2018 position. The key changes are described below:
text: Current assets decreased $10,726 million ($10,477 million adjusted for currency) due to: • A decline in receivables of $6,769 million ($6,695 million adjusted for currency) driven by a decline in financing receivables of $8,197 million primarily due to the wind down of OEM IT commercial financing operations; partially offset by an increase in other receivables of $989 million primarily related to divestitures; and • A decrease of $3,213 million ($3,052 million adjusted for currency) in cash and cash equivalents, restricted cash, and marketable securities primarily due to retirement of debt.
text: Current liabilities decreased $526 million ($449 million adjusted
for currency) as a result of:
text: • A decrease in accounts payable of $1,662 million primarily due to the wind down of OEM IT commercial financing operations; and • A decrease in short-term debt of $1,410 million due to maturities of $12,649 million and a decrease in commercial paper of $2,691 million; partially offset by reclassifications of $7,592 million from long-term debt to reflect upcoming maturities and issuances of $6,334 million; offset by • An increase in operating lease liabilities of $1,380 million as a result of the adoption of the new leasing standard on January 1, 2019; and • An increase in deferred income of $861 million ($890 million adjusted for currency).

Questions:
question: What was the decrease in Working capital from 2018?
answer: $10,200 million
question: What caused the current assets to decrease?
answer: A decline in receivables of $6,769 million ($6,695 million adjusted for currency) driven by a decline in financing receivables of $8,197 million primarily due to the wind down of OEM IT commercial financing operations; partially offset by an increase in other receivables of $989 million primarily related to divestitures; and • A decrease of $3,213 million ($3,052 million adjusted for currency) in cash and cash equivalents, restricted cash, and marketable securities primarily due to retirement of debt.
question: What caused the current liabilities to decrease?
answer: • A decrease in accounts payable of $1,662 million primarily due to the wind down of OEM IT commercial financing operations; and • A decrease in short-term debt of $1,410 million due to maturities of $12,649 million and a decrease in commercial paper of $2,691 million; partially offset by reclassifications of $7,592 million from long-term debt to reflect upcoming maturities and issuances of $6,334 million; offset by • An increase in operating lease liabilities of $1,380 million as a result of the adoption of the new leasing standard on January 1, 2019; and • An increase in deferred income of $861 million ($890 million adjusted for currency).
question: What was the increase / (decrease) in the current assets from 2018 to 2019?
answer: -10726
derivation: 38,420 - 49,146
scale: million
question: What is the percentage increase / (decrease) in Current liabilities from 2018 to 2019?
answer: -1.38
derivation: 37,701/38,227 - 1
scale: percent
question: What is the average working capital?
answer: 5818
derivation: (718 + 10,918) / 2
scale: million