-97.77% is the change from 807 to 18
Calculation steps:
[( 18 - 807 ) ÷ 807] x 100 = -97.77%
Formula
Percentage change = [(18 - 807) / 807] x 100
Subtract the new number by the original number
18 - 807 = -789
-789 ÷ 807 = -0.9776951672862454
-0.9776951672862454 x 100 = -97.77%