-84.6% is the change from 669 to 103
Calculation steps:
[( 103 - 669 ) ÷ 669] x 100 = -84.6%
Formula
Percentage change = [(103 - 669) / 669] x 100
Subtract the new number by the original number
103 - 669 = -566
-566 ÷ 669 = -0.8460388639760837
-0.8460388639760837 x 100 = -84.6%