-93.91% is the change from 838 to 51
Calculation steps:
[( 51 - 838 ) ÷ 838] x 100 = -93.91%
Formula
Percentage change = [(51 - 838) / 838] x 100
Subtract the new number by the original number
51 - 838 = -787
-787 ÷ 838 = -0.9391408114558473
-0.9391408114558473 x 100 = -93.91%