-84.58% is the change from 668 to 103
Calculation steps:
[( 103 - 668 ) ÷ 668] x 100 = -84.58%
Formula
Percentage change = [(103 - 668) / 668] x 100
Subtract the new number by the original number
103 - 668 = -565
-565 ÷ 668 = -0.8458083832335329
-0.8458083832335329 x 100 = -84.58%