-41.15% is the change from 209 to 123
Calculation steps:
[( 123 - 209 ) ÷ 209] x 100 = -41.15%
Formula
Percentage change = [(123 - 209) / 209] x 100
Subtract the new number by the original number
123 - 209 = -86
-86 ÷ 209 = -0.41148325358851673
-0.41148325358851673 x 100 = -41.15%