-84.01% is the change from 663 to 106
Calculation steps:
[( 106 - 663 ) ÷ 663] x 100 = -84.01%
Formula
Percentage change = [(106 - 663) / 663] x 100
Subtract the new number by the original number
106 - 663 = -557
-557 ÷ 663 = -0.8401206636500754
-0.8401206636500754 x 100 = -84.01%