-99.63% is the change from 807 to 3
Calculation steps:
[( 3 - 807 ) ÷ 807] x 100 = -99.63%
Formula
Percentage change = [(3 - 807) / 807] x 100
Subtract the new number by the original number
3 - 807 = -804
-804 ÷ 807 = -0.9962825278810409
-0.9962825278810409 x 100 = -99.63%