-16.92% is the change from 804 to 668
Calculation steps:
[( 668 - 804 ) ÷ 804] x 100 = -16.92%
Formula
Percentage change = [(668 - 804) / 804] x 100
Subtract the new number by the original number
668 - 804 = -136
-136 ÷ 804 = -0.1691542288557214
-0.1691542288557214 x 100 = -16.92%