Table:
2019	2018	2017

Supplemental cash flow information:

Cash paid for interest	$750.2	$789.7	$712.1

Cash paid for income taxes (net of refunds of $11.2, $25.0 and $20.7, respectively)	147.5	163.9	136.5

Non-cash investing and financing activities:

(Decrease) increase in accounts payable and accrued expenses for purchases of property and equipment and construction activities	(21.0)	8.3	34.0

Purchases of property and equipment under finance leases, perpetual easements and capital leases	81.3	57.8	54.8

Fair value of debt assumed through acquisitions	329.8	—	—

Acquisition of Commercialization Rights (1)	—	24.8	—

Conversion of third-party debt to equity	—	—	48.2

Debt financed acquisition of communication sites	—	54.2	—

Answer the following question based on 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).

Text:
AMERICAN TOWER CORPORATION AND SUBSIDIARIES NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
20. SUPPLEMENTAL CASH FLOW INFORMATION
Supplemental cash flow information and non-cash investing and financing activities are as follows for the years ended December 31,:
(1) Related to the note extinguishment with TV Azteca, S.A. de C.V. in 2018.

Question: What was the percentage change in Purchases of property and equipment under finance leases, perpetual easements and capital leases between 2018 and 2019?

((81.3-57.8)/57.8) * 100, therefore {"answer": "40.66", "scale": "percent"}