-3.39% is the change from 678 to 655
Calculation steps:
[( 655 - 678 ) ÷ 678] x 100 = -3.39%
Formula
Percentage change = [(655 - 678) / 678] x 100
Subtract the new number by the original number
655 - 678 = -23
-23 ÷ 678 = -0.03392330383480826
-0.03392330383480826 x 100 = -3.39%