I have a batch script as follows.
D: del \"D:\\TEST\\TEST1\\Archive\\*.TSV\" del \"D:\\TEST\\TEST1\\Archive\\*.TXT\" del \"D:\\TEST\\TEST2\\Archive\\*.TSV\"
in batch code your path should not contain any Space so pls change your folder name from "TEST 100%" to "TEST_100%" and your new code will be del "D:\TEST\TEST_100%\Archive*.TXT"
hope this will resolve your problem