-91.79% is the change from 804 to 66
Calculation steps:
[( 66 - 804 ) ÷ 804] x 100 = -91.79%
Formula
Percentage change = [(66 - 804) / 804] x 100
Subtract the new number by the original number
66 - 804 = -738
-738 ÷ 804 = -0.917910447761194
-0.917910447761194 x 100 = -91.79%