-96.64% is the change from 893 to 30
Calculation steps:
[( 30 - 893 ) ÷ 893] x 100 = -96.64%
Formula
Percentage change = [(30 - 893) / 893] x 100
Subtract the new number by the original number
30 - 893 = -863
-863 ÷ 893 = -0.9664053751399776
-0.9664053751399776 x 100 = -96.64%