For these kinds of questions, you have to know that 100%=1.0
So, to put it simply, you have to get rid of the % sign and then move the decimal points 2 times to the left.
115.9% is equal to 100%+15.9%
so, as mentioned before, 100% is equal to 1, 115.9% is 1+15.9%
15.9%, if the decimal point is moved twice to the left, is equal to 0.159 in decimal points.
To total up,
115.9%=100%+15.9%
=1+0.159
=1.159
To do it another way, just divide this by 100%
So, this way, it will be:
115.9%/100%
=115.9/100
=1+15.9/100
=1+ 159/1000
=1+0.159
=1.159
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