-26.63% is the change from 800 to 587
Calculation steps:
[( 587 - 800 ) ÷ 800] x 100 = -26.63%
Formula
Percentage change = [(587 - 800) / 800] x 100
Subtract the new number by the original number
587 - 800 = -213
-213 ÷ 800 = -0.26625
-0.26625 x 100 = -26.63%