-68.5% is the change from 800 to 252
Calculation steps:
[( 252 - 800 ) ÷ 800] x 100 = -68.5%
Formula
Percentage change = [(252 - 800) / 800] x 100
Subtract the new number by the original number
252 - 800 = -548
-548 ÷ 800 = -0.685
-0.685 x 100 = -68.5%