-98.05% is the change from 820 to 16
Calculation steps:
[( 16 - 820 ) ÷ 820] x 100 = -98.05%
Formula
Percentage change = [(16 - 820) / 820] x 100
Subtract the new number by the original number
16 - 820 = -804
-804 ÷ 820 = -0.9804878048780488
-0.9804878048780488 x 100 = -98.05%