-50.99% is the change from 406 to 199
Calculation steps:
[( 199 - 406 ) ÷ 406] x 100 = -50.99%
Formula
Percentage change = [(199 - 406) / 406] x 100
Subtract the new number by the original number
199 - 406 = -207
-207 ÷ 406 = -0.5098522167487685
-0.5098522167487685 x 100 = -50.99%