-96.6% is the change from 588 to 20
Calculation steps:
[( 20 - 588 ) ÷ 588] x 100 = -96.6%
Formula
Percentage change = [(20 - 588) / 588] x 100
Subtract the new number by the original number
20 - 588 = -568
-568 ÷ 588 = -0.9659863945578231
-0.9659863945578231 x 100 = -96.6%