-23.63% is the change from 800 to 611
Calculation steps:
[( 611 - 800 ) ÷ 800] x 100 = -23.63%
Formula
Percentage change = [(611 - 800) / 800] x 100
Subtract the new number by the original number
611 - 800 = -189
-189 ÷ 800 = -0.23625
-0.23625 x 100 = -23.63%