How to change color of one cell on one sheet based on an increase or decrease form a cell

I have a workbook with 53 sheets, one for each calendar week plus one for yearly. Each sheet has columns for percentages for each shift(1st, 2nd, 3rd). What I want to do is change the color of the cells that increase(green) or decrease(red) from that of the same cells on the previous sheet in order to keep track of progress from week to week. The problem is I don't know how to do it or how to incorprate into the formula I have for these cells. The formula I am using for my percentages is [ code ]=IF(ISERROR(B4/D4),"0",B4/D4)[ /code ] .

Book1 - Copy.xlsx

this would normally be done with conditional formatting, but CF does not work across sheets. another option might be to reference the sheet before in a table off to the side, and then use CF based on that