-99.02% is the change from 610 to 6
Calculation steps:
[( 6 - 610 ) ÷ 610] x 100 = -99.02%
Formula
Percentage change = [(6 - 610) / 610] x 100
Subtract the new number by the original number
6 - 610 = -604
-604 ÷ 610 = -0.9901639344262295
-0.9901639344262295 x 100 = -99.02%