-96.7% is the change from 606 to 20
Calculation steps:
[( 20 - 606 ) ÷ 606] x 100 = -96.7%
Formula
Percentage change = [(20 - 606) / 606] x 100
Subtract the new number by the original number
20 - 606 = -586
-586 ÷ 606 = -0.966996699669967
-0.966996699669967 x 100 = -96.7%