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Changed pct_change parameters to calculate pct_change right-to-left f… #39740

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Changed pct_change parameters to calculate pct_change right-to-left f… #39740

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5 changes: 4 additions & 1 deletion pandas/core/generic.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10205,7 +10205,10 @@ def pct_change(
assert _data is not None # needed for mypy
data = _data

rs = data.div(data.shift(periods=periods, freq=freq, axis=axis, **kwargs)) - 1
if axis == 1:
rs = data.div(data.shift(periods=-periods, freq=freq, axis=axis, **kwargs)) - 1
else:
rs = data.div(data.shift(periods=periods, freq=freq, axis=axis, **kwargs)) - 1
if freq is not None:
# Shift method is implemented differently when freq is not None
# We want to restore the original index
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