-49.39% is the change from 409 to 207
Calculation steps:
[( 207 - 409 ) ÷ 409] x 100 = -49.39%
Formula
Percentage change = [(207 - 409) / 409] x 100
Subtract the new number by the original number
207 - 409 = -202
-202 ÷ 409 = -0.4938875305623472
-0.4938875305623472 x 100 = -49.39%