If you change income, rent, debt payments, transport and savings in one jump, the result may look different without teaching you why.
Duplicate the baseline and change the assumption closest to the decision. Look at the result. Then add the next connected change.
There is one exception
Some choices naturally change a group of costs. Moving home may change rent, transport, insurance and childcare together. In that case, change the connected group, but keep a short list of what moved.
Tip: Clear learning is more useful than a dramatic scenario.