-94.09% is the change from 863 to 51
Calculation steps:
[( 51 - 863 ) ÷ 863] x 100 = -94.09%
Formula
Percentage change = [(51 - 863) / 863] x 100
Subtract the new number by the original number
51 - 863 = -812
-812 ÷ 863 = -0.9409038238702202
-0.9409038238702202 x 100 = -94.09%