-90.06% is the change from 161 to 16
Calculation steps:
[( 16 - 161 ) ÷ 161] x 100 = -90.06%
Formula
Percentage change = [(16 - 161) / 161] x 100
Subtract the new number by the original number
16 - 161 = -145
-145 ÷ 161 = -0.9006211180124224
-0.9006211180124224 x 100 = -90.06%