-90.69% is the change from 838 to 78
Calculation steps:
[( 78 - 838 ) ÷ 838] x 100 = -90.69%
Formula
Percentage change = [(78 - 838) / 838] x 100
Subtract the new number by the original number
78 - 838 = -760
-760 ÷ 838 = -0.9069212410501193
-0.9069212410501193 x 100 = -90.69%