-98.78% is the change from 654 to 8
Calculation steps:
[( 8 - 654 ) ÷ 654] x 100 = -98.78%
Formula
Percentage change = [(8 - 654) / 654] x 100
Subtract the new number by the original number
8 - 654 = -646
-646 ÷ 654 = -0.9877675840978594
-0.9877675840978594 x 100 = -98.78%