-17.63% is the change from 800 to 659
Calculation steps:
[( 659 - 800 ) ÷ 800] x 100 = -17.63%
Formula
Percentage change = [(659 - 800) / 800] x 100
Subtract the new number by the original number
659 - 800 = -141
-141 ÷ 800 = -0.17625
-0.17625 x 100 = -17.63%