Nikon 1.5X APS-C sensors in their current lineup are actually 1.52-1.53X depending on the exact measurements of the various different sensors in different models. Some older, discontinued models in the D3x00 series are slightly smaller at 1.55-1.56X.
The difference between 1.52X and 1.53X is 0.65789 percent.
The difference between 1.5X and 1.53X is a mere 2 percent.
The difference between Nikon 1.5X APS-C sensors (actually 1.52-1.53X depending on the exact measurements of various different sensors in different models) and Canon 1.6X APS-C sensors (actually 1.6-1.61X depending on the specific sensor) is only around 5 percent.
The difference between stated/marketed focal lengths of lenses and the actual focal length of the same lens can be as high as 10% or more when the lens is focused at infinity.
There are some fairly expensive lenses that breathe so heavily that the field of view can vary by 30% or more when focused at the minimum focus distance. Take for instance, the Nikon AF-S 70-200mm f/2.8G VR II. At maximum zoom (marked 200mm) and minimum focus distance the field of view projected onto a full frame sensor is equivalent to a focal length of only about 134mm! That's only 67% of the stated focal length!
Can you see where this is going?