-98.36% is the change from 609 to 10
Calculation steps:
[( 10 - 609 ) ÷ 609] x 100 = -98.36%
Formula
Percentage change = [(10 - 609) / 609] x 100
Subtract the new number by the original number
10 - 609 = -599
-599 ÷ 609 = -0.9835796387520526
-0.9835796387520526 x 100 = -98.36%