Withdrawal Fees are not percentage based, they are a fixed amount for every withdrawal, regardless of the amount. Fees are not taken into account for one's withdrawal limit. As outlined below, every coin has a different fee:
Bitcoin - 0.0001 BTC
WeyCoin - 5.0 WAE
Litecoin - 0.005 LTC
Dogecoin - 4.0 DOGE
Ethereum - 0.002 ETH
SpesCoin - 1.0 SPES
UltraNote - 1.0 XUN
Artax - 1.0 XAX
BabyChain - 1.0 BABY
XGoX - 250.0 XGOX
Iridium - 0.05 IRD
Gravity Zero - 50.0 GZRO
Mirai - 1.0 MRI
Masari - 1.0 MSR
XGoX Dark - 10.0 XGOD
Alloy - 1.0 XAO
Ryo - 1.0 RYO
Sumokoin - 1.0 SUMO
Wownero - 1.0 WOW
EtherGem - 5.0 EGEM
Myztic - 1.0 MZT
Denarius - 0.1 DNR
SHIELD - 1.0 XSH
DigiByte - 1.0 DGB
Electronero - 500.0 ETNX
TurtleCoin - 10.0 TRTL
VertCoin - 0.5 VTC
CryptoNodes - 1.0 CNMC
MotaCoin - 1.0 MOTA
FestivalCoin - 1.0 FEST
Growers - 1.0 GRWI
EtherZero - 1.0 ETHO
ParsiCoin - 1.0 PARS
BreakBits - 1.0 BRB
SkullNodes - 3.0 SKX
PigeonCoin - 1.0 PGN
FlakeChain - 1.0 XSF
Reecore - 1.0 REEX
UnA - 1.0 UNA
Nibex - 1.0 NBX
B2B Coin - 3.0 B2B
Bitcoin Incognito - 2.0 XBI
Conceal - 1.0 CCX
xDrop - 1.0 DROP
Koson - 1.0 KSN
FortyTwo - 1.0 FRTY
Monero - 0.01 XMR
Expanse - 0.5 EXP
Geem - 1.0 GEEM
Electroneum - 1.0 ETN
Renesis - 0.25 RESS
ReCoal - 1.0 RECL
Blur Network - 1.0 BLUR
Polytimos - 1.0 POLY
Crypto Fight Club - 1.0 CFCC
Mutex - 1.0 MUTX
Worktips - 1.0 WTIP
Intucoin - 1.0 INTU
Lumeneo - 1.0 LMO
TycheCash - 2.0 TYCH
MicroCoin - 1.0 MCC
Plenteum - 1.0 PLE
In general, the trading fee is 0.10% of any transaction that occurs.