-84.43% is the change from 668 to 104
Calculation steps:
[( 104 - 668 ) ÷ 668] x 100 = -84.43%
Formula
Percentage change = [(104 - 668) / 668] x 100
Subtract the new number by the original number
104 - 668 = -564
-564 ÷ 668 = -0.844311377245509
-0.844311377245509 x 100 = -84.43%