-96.24% is the change from 798 to 30
Calculation steps:
[( 30 - 798 ) ÷ 798] x 100 = -96.24%
Formula
Percentage change = [(30 - 798) / 798] x 100
Subtract the new number by the original number
30 - 798 = -768
-768 ÷ 798 = -0.9624060150375939
-0.9624060150375939 x 100 = -96.24%