-48.4% is the change from 405 to 209
Calculation steps:
[( 209 - 405 ) ÷ 405] x 100 = -48.4%
Formula
Percentage change = [(209 - 405) / 405] x 100
Subtract the new number by the original number
209 - 405 = -196
-196 ÷ 405 = -0.4839506172839506
-0.4839506172839506 x 100 = -48.4%