-98.16% is the change from 814 to 15
Calculation steps:
[( 15 - 814 ) ÷ 814] x 100 = -98.16%
Formula
Percentage change = [(15 - 814) / 814] x 100
Subtract the new number by the original number
15 - 814 = -799
-799 ÷ 814 = -0.9815724815724816
-0.9815724815724816 x 100 = -98.16%