-97.91% is the change from 669 to 14
Calculation steps:
[( 14 - 669 ) ÷ 669] x 100 = -97.91%
Formula
Percentage change = [(14 - 669) / 669] x 100
Subtract the new number by the original number
14 - 669 = -655
-655 ÷ 669 = -0.9790732436472347
-0.9790732436472347 x 100 = -97.91%