-19.42% is the change from 999 to 805
Calculation steps:
[( 805 - 999 ) ÷ 999] x 100 = -19.42%
Formula
Percentage change = [(805 - 999) / 999] x 100
Subtract the new number by the original number
805 - 999 = -194
-194 ÷ 999 = -0.1941941941941942
-0.1941941941941942 x 100 = -19.42%