-83.21% is the change from 804 to 135
Calculation steps:
[( 135 - 804 ) ÷ 804] x 100 = -83.21%
Formula
Percentage change = [(135 - 804) / 804] x 100
Subtract the new number by the original number
135 - 804 = -669
-669 ÷ 804 = -0.832089552238806
-0.832089552238806 x 100 = -83.21%