-72.75% is the change from 800 to 218
Calculation steps:
[( 218 - 800 ) ÷ 800] x 100 = -72.75%
Formula
Percentage change = [(218 - 800) / 800] x 100
Subtract the new number by the original number
218 - 800 = -582
-582 ÷ 800 = -0.7275
-0.7275 x 100 = -72.75%