-97.85% is the change from 930 to 20
Calculation steps:
[( 20 - 930 ) ÷ 930] x 100 = -97.85%
Formula
Percentage change = [(20 - 930) / 930] x 100
Subtract the new number by the original number
20 - 930 = -910
-910 ÷ 930 = -0.978494623655914
-0.978494623655914 x 100 = -97.85%