-98.13% is the change from 803 to 15
Calculation steps:
[( 15 - 803 ) ÷ 803] x 100 = -98.13%
Formula
Percentage change = [(15 - 803) / 803] x 100
Subtract the new number by the original number
15 - 803 = -788
-788 ÷ 803 = -0.9813200498132005
-0.9813200498132005 x 100 = -98.13%