-30.88% is the change from 800 to 553
Calculation steps:
[( 553 - 800 ) ÷ 800] x 100 = -30.88%
Formula
Percentage change = [(553 - 800) / 800] x 100
Subtract the new number by the original number
553 - 800 = -247
-247 ÷ 800 = -0.30875
-0.30875 x 100 = -30.88%