-98.36% is the change from 610 to 10
Calculation steps:
[( 10 - 610 ) ÷ 610] x 100 = -98.36%
Formula
Percentage change = [(10 - 610) / 610] x 100
Subtract the new number by the original number
10 - 610 = -600
-600 ÷ 610 = -0.9836065573770492
-0.9836065573770492 x 100 = -98.36%