-71.5% is the change from 800 to 228
Calculation steps:
[( 228 - 800 ) ÷ 800] x 100 = -71.5%
Formula
Percentage change = [(228 - 800) / 800] x 100
Subtract the new number by the original number
228 - 800 = -572
-572 ÷ 800 = -0.715
-0.715 x 100 = -71.5%