Follow these steps as I think it should fix your problem, also this is a blender tutorial so if you exported from blender this in theory should fix your issue.
STEP 1:
Click “File” then click “Export”
STEP 2:
Export as an FBX (.fbx) or Wavefront (.obj)
STEP 3:
Change your scale down from 1.00 to 0.01 in the top of “Transform”
BEFORE
AFTER
