-93.96% is the change from 845 to 51
Calculation steps:
[( 51 - 845 ) ÷ 845] x 100 = -93.96%
Formula
Percentage change = [(51 - 845) / 845] x 100
Subtract the new number by the original number
51 - 845 = -794
-794 ÷ 845 = -0.9396449704142011
-0.9396449704142011 x 100 = -93.96%