-97.91% is the change from 959 to 20
Calculation steps:
[( 20 - 959 ) ÷ 959] x 100 = -97.91%
Formula
Percentage change = [(20 - 959) / 959] x 100
Subtract the new number by the original number
20 - 959 = -939
-939 ÷ 959 = -0.9791449426485923
-0.9791449426485923 x 100 = -97.91%