-97.8% is the change from 908 to 20
Calculation steps:
[( 20 - 908 ) ÷ 908] x 100 = -97.8%
Formula
Percentage change = [(20 - 908) / 908] x 100
Subtract the new number by the original number
20 - 908 = -888
-888 ÷ 908 = -0.9779735682819384
-0.9779735682819384 x 100 = -97.8%