You’re right, I did my math wrong. What I was actually meaning to show (and goofed up) was percentage difference:
View attachment 1716271021
What I showed was percentage decrease, which is the wrong direction as the thread started with small to big:
View attachment 1716271023
Your percentage increase, which as you noted, matters how it is phrased, is also correct:
View attachment 1716271022
Accordingly, the way you phrased the egg price increase would generate $1.50 as the new price.
However, if you said that eggs cost $1.50 this week and $1.00 last week, the percentage difference would be 40%.