-49.14% is the change from 407 to 207
Calculation steps:
[( 207 - 407 ) ÷ 407] x 100 = -49.14%
Formula
Percentage change = [(207 - 407) / 407] x 100
Subtract the new number by the original number
207 - 407 = -200
-200 ÷ 407 = -0.4914004914004914
-0.4914004914004914 x 100 = -49.14%