-71.88% is the change from 800 to 225
Calculation steps:
[( 225 - 800 ) ÷ 800] x 100 = -71.88%
Formula
Percentage change = [(225 - 800) / 800] x 100
Subtract the new number by the original number
225 - 800 = -575
-575 ÷ 800 = -0.71875
-0.71875 x 100 = -71.88%