-98.51% is the change from 803 to 12
Calculation steps:
[( 12 - 803 ) ÷ 803] x 100 = -98.51%
Formula
Percentage change = [(12 - 803) / 803] x 100
Subtract the new number by the original number
12 - 803 = -791
-791 ÷ 803 = -0.9850560398505604
-0.9850560398505604 x 100 = -98.51%