-98.12% is the change from 850 to 16
Calculation steps:
[( 16 - 850 ) ÷ 850] x 100 = -98.12%
Formula
Percentage change = [(16 - 850) / 850] x 100
Subtract the new number by the original number
16 - 850 = -834
-834 ÷ 850 = -0.9811764705882353
-0.9811764705882353 x 100 = -98.12%