-96.88% is the change from 609 to 19
Calculation steps:
[( 19 - 609 ) ÷ 609] x 100 = -96.88%
Formula
Percentage change = [(19 - 609) / 609] x 100
Subtract the new number by the original number
19 - 609 = -590
-590 ÷ 609 = -0.9688013136288999
-0.9688013136288999 x 100 = -96.88%