-82.93% is the change from 164 to 28
Calculation steps:
[( 28 - 164 ) ÷ 164] x 100 = -82.93%
Formula
Percentage change = [(28 - 164) / 164] x 100
Subtract the new number by the original number
28 - 164 = -136
-136 ÷ 164 = -0.8292682926829268
-0.8292682926829268 x 100 = -82.93%