-98.04% is the change from 815 to 16
Calculation steps:
[( 16 - 815 ) ÷ 815] x 100 = -98.04%
Formula
Percentage change = [(16 - 815) / 815] x 100
Subtract the new number by the original number
16 - 815 = -799
-799 ÷ 815 = -0.9803680981595092
-0.9803680981595092 x 100 = -98.04%