It is the slide switch for decimal places. You needs to be set to 2 places.
support.casio.com > Support > FAQs > Calculators > Printing Calculators
Q1: What is the [F CUT 5/4] switch or [DEC] F, 0, 2 button for? (HR
-8 series); A1: The HR
-8 series have a [DEC] key with F, 0, 2, and 5/4 over it, while many other calculators models have a switch labeled [F CUT 5/4]. The button or switch can control rounding off
to a certain number of decimal places. F is floating point (no F ...
support.casio.com > Support > Manuals > Calculators
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-line. [ To download a file ] 1.Align your mouse pointer with the ...
support.casio.com/en/manual/004/HR-170RC_200RC_WA_EN.pdf - Translate this page
Mar 15, 2017 - Back-up
Battery. Your calculator comes with a single built-in CR2032 lithium battery that provides power to retain values stored in memory when you leave the calculator without power (AC ... Weight: HR
: 570 g (20.1 oz) including batteries ..... performed with values as input, and the result is rounded
support.casio.com > Support > FAQs > Calculators > General Calculator
Q1: What is the use of the Slide Switch? A1: F: Floating Decimal CUT: Values are cut off
to the number of decimal places specified by the current Decimal Place Selector setting. UP
: Values are rounded up
to the number of decimal places specified by the current Decimal Place Selector setting 5/4: Values are rounded off
(0,1 ...Missing: 170rc