-73.93% is the change from 610 to 159
Calculation steps:
[( 159 - 610 ) ÷ 610] x 100 = -73.93%
Formula
Percentage change = [(159 - 610) / 610] x 100
Subtract the new number by the original number
159 - 610 = -451
-451 ÷ 610 = -0.739344262295082
-0.739344262295082 x 100 = -73.93%