-17.75% is the change from 800 to 658
Calculation steps:
[( 658 - 800 ) ÷ 800] x 100 = -17.75%
Formula
Percentage change = [(658 - 800) / 800] x 100
Subtract the new number by the original number
658 - 800 = -142
-142 ÷ 800 = -0.1775
-0.1775 x 100 = -17.75%