-51.87% is the change from 804 to 387
Calculation steps:
[( 387 - 804 ) ÷ 804] x 100 = -51.87%
Formula
Percentage change = [(387 - 804) / 804] x 100
Subtract the new number by the original number
387 - 804 = -417
-417 ÷ 804 = -0.5186567164179104
-0.5186567164179104 x 100 = -51.87%