-66.63% is the change from 800 to 267
Calculation steps:
[( 267 - 800 ) ÷ 800] x 100 = -66.63%
Formula
Percentage change = [(267 - 800) / 800] x 100
Subtract the new number by the original number
267 - 800 = -533
-533 ÷ 800 = -0.66625
-0.66625 x 100 = -66.63%