-96.75% is the change from 923 to 30
Calculation steps:
[( 30 - 923 ) ÷ 923] x 100 = -96.75%
Formula
Percentage change = [(30 - 923) / 923] x 100
Subtract the new number by the original number
30 - 923 = -893
-893 ÷ 923 = -0.9674972914409534
-0.9674972914409534 x 100 = -96.75%