-22.88% is the change from 800 to 617
Calculation steps:
[( 617 - 800 ) ÷ 800] x 100 = -22.88%
Formula
Percentage change = [(617 - 800) / 800] x 100
Subtract the new number by the original number
617 - 800 = -183
-183 ÷ 800 = -0.22875
-0.22875 x 100 = -22.88%