-19.4% is the change from 804 to 648
Calculation steps:
[( 648 - 804 ) ÷ 804] x 100 = -19.4%
Formula
Percentage change = [(648 - 804) / 804] x 100
Subtract the new number by the original number
648 - 804 = -156
-156 ÷ 804 = -0.19402985074626866
-0.19402985074626866 x 100 = -19.4%