-93.41% is the change from 819 to 54
Calculation steps:
[( 54 - 819 ) ÷ 819] x 100 = -93.41%
Formula
Percentage change = [(54 - 819) / 819] x 100
Subtract the new number by the original number
54 - 819 = -765
-765 ÷ 819 = -0.9340659340659341
-0.9340659340659341 x 100 = -93.41%