-49.39% is the change from 407 to 206
Calculation steps:
[( 206 - 407 ) ÷ 407] x 100 = -49.39%
Formula
Percentage change = [(206 - 407) / 407] x 100
Subtract the new number by the original number
206 - 407 = -201
-201 ÷ 407 = -0.49385749385749383
-0.49385749385749383 x 100 = -49.39%