-96.44% is the change from 842 to 30
Calculation steps:
[( 30 - 842 ) ÷ 842] x 100 = -96.44%
Formula
Percentage change = [(30 - 842) / 842] x 100
Subtract the new number by the original number
30 - 842 = -812
-812 ÷ 842 = -0.9643705463182898
-0.9643705463182898 x 100 = -96.44%