-97.91% is the change from 958 to 20
Calculation steps:
[( 20 - 958 ) ÷ 958] x 100 = -97.91%
Formula
Percentage change = [(20 - 958) / 958] x 100
Subtract the new number by the original number
20 - 958 = -938
-938 ÷ 958 = -0.9791231732776617
-0.9791231732776617 x 100 = -97.91%