-28.55% is the change from 669 to 478
Calculation steps:
[( 478 - 669 ) ÷ 669] x 100 = -28.55%
Formula
Percentage change = [(478 - 669) / 669] x 100
Subtract the new number by the original number
478 - 669 = -191
-191 ÷ 669 = -0.28550074738415543
-0.28550074738415543 x 100 = -28.55%