-84% is the change from 100 to 16
Calculation steps:
[( 16 - 100 ) ÷ 100] x 100 = -84%
Formula
Percentage change = [(16 - 100) / 100] x 100
Subtract the new number by the original number
16 - 100 = -84
-84 ÷ 100 = -0.84
-0.84 x 100 = -84%
Example