What finally helped me break that cycle was learning to use named ranges in Excel not only as stable anchors but also as ...
=LET (Spend,SUMIF (T_Budget [Category],E2,T_Budget [Cost]),IFS (Spend>F2,"Over budget",Spend=F2,"Budget hit",Spend> (F2*0.9),"Near budget",TRUE,"Within budget")) Let's break the formula down to ...