-24.63% is the change from 800 to 603
Calculation steps:
[( 603 - 800 ) ÷ 800] x 100 = -24.63%
Formula
Percentage change = [(603 - 800) / 800] x 100
Subtract the new number by the original number
603 - 800 = -197
-197 ÷ 800 = -0.24625
-0.24625 x 100 = -24.63%