-66.88% is the change from 800 to 265
Calculation steps:
[( 265 - 800 ) ÷ 800] x 100 = -66.88%
Formula
Percentage change = [(265 - 800) / 800] x 100
Subtract the new number by the original number
265 - 800 = -535
-535 ÷ 800 = -0.66875
-0.66875 x 100 = -66.88%