To find the net change in Cheryl's account balance, we can subtract yesterday's balance from today's balance.
Yesterday's balance: $67.12
Today's balance: -$2.56
Net change = Today's balance - Yesterday's balance
Net change = -$2.56 - $67.12
Now, we perform the subtraction:
Net change = -$2.56 - $67.12
Net change = -$2.56 - $67.12 = -$69.68
So, the net change in Cheryl's account balance is -$69.68. This means her balance decreased by $69.68.