Financial report context:
item 1b . unresolved staff comments not applicable . item 2 . properties our global headquarters are located in chicago , illinois , at 20 south wacker drive . the following is a description of our key locations and facilities . location primary use owned/leased lease expiration approximate size ( in square feet ) ( 1 ) 20 south wacker drive chicago , illinois global headquarters and office space leased 2032 ( 2 ) 512000 141 west jackson chicago , illinois trading floor and office space leased 2027 ( 3 ) 150000 333 s . lasalle chicago , illinois trading floor and office space owned n/a 300000 550 west washington chicago , illinois office space leased 2023 250000 one north end new york , new york trading floor and office space leased 2028 ( 4 ) 240000 .

Financial table:
location: 20 south wacker drive chicago illinois; primary use: global headquarters and office space; owned/leased: leased; lease expiration: 2032 ( 2 ); approximate size ( in square feet ) ( 1 ): 512000
location: 141 west jacksonchicago illinois; primary use: trading floor and office space; owned/leased: leased; lease expiration: 2027 ( 3 ); approximate size ( in square feet ) ( 1 ): 150000
location: 333 s . lasallechicago illinois; primary use: trading floor and office space; owned/leased: owned; lease expiration: n/a; approximate size ( in square feet ) ( 1 ): 300000
location: 550 west washingtonchicago illinois; primary use: office space; owned/leased: leased; lease expiration: 2023; approximate size ( in square feet ) ( 1 ): 250000
location: one north endnew york new york; primary use: trading floor and office space; owned/leased: leased; lease expiration: 2028 ( 4 ); approximate size ( in square feet ) ( 1 ): 240000
location: one new change london; primary use: office space; owned/leased: leased; lease expiration: 2026; approximate size ( in square feet ) ( 1 ): 58000
location: data center 3chicagoland area; primary use: business continuity and co-location; owned/leased: leased; lease expiration: 2031 ( 5 ); approximate size ( in square feet ) ( 1 ): 83000
location: bagmane tech park bangalore india; primary use: office space; owned/leased: leased; lease expiration: 2020 ( 6 ); approximate size ( in square feet ) ( 1 ): 72000

Additional report context:
data center 3 chicagoland area business continuity and co-location leased 2031 ( 5 ) 83000 bagmane tech park bangalore , office space leased 2020 ( 6 ) 72000 ( 1 ) size represents the amount of space leased or owned by us unless otherwise noted . ( 2 ) the initial lease expires in 2032 with two consecutive options to extend the term for five years each . ( 3 ) the initial lease expires in 2027 and contains options to extend the term and expand the premises . ( 4 ) the initial lease expires in 2028 and contains options to extend the term and expand the premises . in 2019 , the premises will be reduced to 225000 square feet . ( 5 ) in march 2016 , the company sold its datacenter in the chicago area for $ 130.0 million . at the time of the sale , the company leased back a portion of the property . ( 6 ) the initial lease expires in 2020 and contains an option to extend the term as well as an option to terminate early . item 3 . legal proceedings see 201clegal and regulatory matters 201d in note 12 . contingencies to the consolidated financial statements beginning on page 87 for cme group 2019s legal proceedings disclosure which is incorporated herein by reference . item 4 . mine safety disclosures not applicable. .

Question: by what percentage will the space in one north endnew york new york decrease in 2019?
Answer: -6.3%