Q: Accidently Formatted Partition 0 Disk 4 BOOTCAMP Windows 8.1

Yesterday I bought Windows 8.1 and started installing it with bootcamp. I got through all the steps and got to the collecting information page on the windows OS. I filled everything out, product key and everything. Then I got to the partitions page, I selected the Partition 0 Disk 4. I then clicked format (not really realizing what it was). Once that finished I couldnt install windows. It told me that the drive needs to be in NTSF format. I did not delete the main MAC OS. I've looked at many solutions but they didnt work or they were too old for my computer. I gave Windows a space amount of 243.21. If any one could help it would be greatly appreciated!

Specs:

iMac 27" Late 2013

Version: 10.11.3 OS X El Capitan

Processor: 3.2 GHz Intel Core i5

Memory: 8 GB 1600 MHz DDR3