-21.84% is the change from 206 to 161
Calculation steps:
[( 161 - 206 ) ÷ 206] x 100 = -21.84%
Formula
Percentage change = [(161 - 206) / 206] x 100
Subtract the new number by the original number
161 - 206 = -45
-45 ÷ 206 = -0.21844660194174756
-0.21844660194174756 x 100 = -21.84%