-95.96% is the change from 669 to 27
Calculation steps:
[( 27 - 669 ) ÷ 669] x 100 = -95.96%
Formula
Percentage change = [(27 - 669) / 669] x 100
Subtract the new number by the original number
27 - 669 = -642
-642 ÷ 669 = -0.9596412556053812
-0.9596412556053812 x 100 = -95.96%