-98.4% is the change from 814 to 13
Calculation steps:
[( 13 - 814 ) ÷ 814] x 100 = -98.4%
Formula
Percentage change = [(13 - 814) / 814] x 100
Subtract the new number by the original number
13 - 814 = -801
-801 ÷ 814 = -0.984029484029484
-0.984029484029484 x 100 = -98.4%