-34.07% is the change from 678 to 447
Calculation steps:
[( 447 - 678 ) ÷ 678] x 100 = -34.07%
Formula
Percentage change = [(447 - 678) / 678] x 100
Subtract the new number by the original number
447 - 678 = -231
-231 ÷ 678 = -0.3407079646017699
-0.3407079646017699 x 100 = -34.07%