-98.69% is the change from 610 to 8
Calculation steps:
[( 8 - 610 ) ÷ 610] x 100 = -98.69%
Formula
Percentage change = [(8 - 610) / 610] x 100
Subtract the new number by the original number
8 - 610 = -602
-602 ÷ 610 = -0.9868852459016394
-0.9868852459016394 x 100 = -98.69%