-23.51% is the change from 804 to 615
Calculation steps:
[( 615 - 804 ) ÷ 804] x 100 = -23.51%
Formula
Percentage change = [(615 - 804) / 804] x 100
Subtract the new number by the original number
615 - 804 = -189
-189 ÷ 804 = -0.23507462686567165
-0.23507462686567165 x 100 = -23.51%