Wifi speed vs lan speed

First off, all your figures are probably megabits per second (Mb/s).  A megabyte per second (MB/s) is 8x bigger than a megabit per second, so there's a big difference.

Second, real world Wi-Fi speeds are seldom anywhere close to what's advertised.  450 Mb/s with 2.4 GHz requires a device with high-end Wi-Fi in an isolated environment with no other neighboring Wi-Fi networks.  216 Mb/s is what you get when other networks are present.  Most smartphones do not have high end Wi-Fi and will actually connect at 144 Mb/s or less.  Finally, distance, obstructions and radio interference will cut that down.  A good rule of thumb is to cut everything in half.  That 144 Mb/s becomes 72 Mb/s, give or take, which is roughly what you got.