-80.95% is the change from 84 to 16
Calculation steps:
[( 16 - 84 ) ÷ 84] x 100 = -80.95%
Formula
Percentage change = [(16 - 84) / 84] x 100
Subtract the new number by the original number
16 - 84 = -68
-68 ÷ 84 = -0.8095238095238095
-0.8095238095238095 x 100 = -80.95%