-97.85% is the change from 931 to 20
Calculation steps:
[( 20 - 931 ) ÷ 931] x 100 = -97.85%
Formula
Percentage change = [(20 - 931) / 931] x 100
Subtract the new number by the original number
20 - 931 = -911
-911 ÷ 931 = -0.9785177228786252
-0.9785177228786252 x 100 = -97.85%