-96.63% is the change from 593 to 20
Calculation steps:
[( 20 - 593 ) ÷ 593] x 100 = -96.63%
Formula
Percentage change = [(20 - 593) / 593] x 100
Subtract the new number by the original number
20 - 593 = -573
-573 ÷ 593 = -0.9662731871838112
-0.9662731871838112 x 100 = -96.63%