-93.66% is the change from 805 to 51
Calculation steps:
[( 51 - 805 ) ÷ 805] x 100 = -93.66%
Formula
Percentage change = [(51 - 805) / 805] x 100
Subtract the new number by the original number
51 - 805 = -754
-754 ÷ 805 = -0.9366459627329192
-0.9366459627329192 x 100 = -93.66%