-93.68% is the change from 807 to 51
Calculation steps:
[( 51 - 807 ) ÷ 807] x 100 = -93.68%
Formula
Percentage change = [(51 - 807) / 807] x 100
Subtract the new number by the original number
51 - 807 = -756
-756 ÷ 807 = -0.9368029739776952
-0.9368029739776952 x 100 = -93.68%