-98.14% is the change from 808 to 15
Calculation steps:
[( 15 - 808 ) ÷ 808] x 100 = -98.14%
Formula
Percentage change = [(15 - 808) / 808] x 100
Subtract the new number by the original number
15 - 808 = -793
-793 ÷ 808 = -0.9814356435643564
-0.9814356435643564 x 100 = -98.14%