-97.85% is the change from 606 to 13
Calculation steps:
[( 13 - 606 ) ÷ 606] x 100 = -97.85%
Formula
Percentage change = [(13 - 606) / 606] x 100
Subtract the new number by the original number
13 - 606 = -593
-593 ÷ 606 = -0.9785478547854786
-0.9785478547854786 x 100 = -97.85%