-21.53% is the change from 209 to 164
Calculation steps:
[( 164 - 209 ) ÷ 209] x 100 = -21.53%
Formula
Percentage change = [(164 - 209) / 209] x 100
Subtract the new number by the original number
164 - 209 = -45
-45 ÷ 209 = -0.215311004784689
-0.215311004784689 x 100 = -21.53%