-33% is the change from 800 to 536
Calculation steps:
[( 536 - 800 ) ÷ 800] x 100 = -33%
Formula
Percentage change = [(536 - 800) / 800] x 100
Subtract the new number by the original number
536 - 800 = -264
-264 ÷ 800 = -0.33
-0.33 x 100 = -33%
Example