-96.28% is the change from 807 to 30
Calculation steps:
[( 30 - 807 ) ÷ 807] x 100 = -96.28%
Formula
Percentage change = [(30 - 807) / 807] x 100
Subtract the new number by the original number
30 - 807 = -777
-777 ÷ 807 = -0.9628252788104089
-0.9628252788104089 x 100 = -96.28%