Answer:
The change was 32.8 degrees.
Step-by-step explanation:
Quite a lot. Very unusual.
-12.5 to 20.3
You need to add 12.5 just to get to 0. Then you add 20.3 to get the high temperature, So the answer is 12.5 + 20.3 = 32.8. That in centigrade would be a huge move. In Fahrenheit not so much but still pretty big.
