-97.92% is the change from 960 to 20
Calculation steps:
[( 20 - 960 ) ÷ 960] x 100 = -97.92%
Formula
Percentage change = [(20 - 960) / 960] x 100
Subtract the new number by the original number
20 - 960 = -940
-940 ÷ 960 = -0.9791666666666666
-0.9791666666666666 x 100 = -97.92%