-84.08% is the change from 804 to 128
Calculation steps:
[( 128 - 804 ) ÷ 804] x 100 = -84.08%
Formula
Percentage change = [(128 - 804) / 804] x 100
Subtract the new number by the original number
128 - 804 = -676
-676 ÷ 804 = -0.8407960199004975
-0.8407960199004975 x 100 = -84.08%