-97.87% is the change from 610 to 13
Calculation steps:
[( 13 - 610 ) ÷ 610] x 100 = -97.87%
Formula
Percentage change = [(13 - 610) / 610] x 100
Subtract the new number by the original number
13 - 610 = -597
-597 ÷ 610 = -0.978688524590164
-0.978688524590164 x 100 = -97.87%