-82.61% is the change from 161 to 28
Calculation steps:
[( 28 - 161 ) ÷ 161] x 100 = -82.61%
Formula
Percentage change = [(28 - 161) / 161] x 100
Subtract the new number by the original number
28 - 161 = -133
-133 ÷ 161 = -0.8260869565217391
-0.8260869565217391 x 100 = -82.61%