-96.24% is the change from 797 to 30
Calculation steps:
[( 30 - 797 ) ÷ 797] x 100 = -96.24%
Formula
Percentage change = [(30 - 797) / 797] x 100
Subtract the new number by the original number
30 - 797 = -767
-767 ÷ 797 = -0.9623588456712673
-0.9623588456712673 x 100 = -96.24%