-51% is the change from 804 to 394
Calculation steps:
[( 394 - 804 ) ÷ 804] x 100 = -51%
Formula
Percentage change = [(394 - 804) / 804] x 100
Subtract the new number by the original number
394 - 804 = -410
-410 ÷ 804 = -0.5099502487562189
-0.5099502487562189 x 100 = -51%