-52.75% is the change from 800 to 378
Calculation steps:
[( 378 - 800 ) ÷ 800] x 100 = -52.75%
Formula
Percentage change = [(378 - 800) / 800] x 100
Subtract the new number by the original number
378 - 800 = -422
-422 ÷ 800 = -0.5275
-0.5275 x 100 = -52.75%