-84.75% is the change from 800 to 122
Calculation steps:
[( 122 - 800 ) ÷ 800] x 100 = -84.75%
Formula
Percentage change = [(122 - 800) / 800] x 100
Subtract the new number by the original number
122 - 800 = -678
-678 ÷ 800 = -0.8475
-0.8475 x 100 = -84.75%