-98.38% is the change from 803 to 13
Calculation steps:
[( 13 - 803 ) ÷ 803] x 100 = -98.38%
Formula
Percentage change = [(13 - 803) / 803] x 100
Subtract the new number by the original number
13 - 803 = -790
-790 ÷ 803 = -0.9838107098381071
-0.9838107098381071 x 100 = -98.38%