-47.12% is the change from 399 to 211
Calculation steps:
[( 211 - 399 ) ÷ 399] x 100 = -47.12%
Formula
Percentage change = [(211 - 399) / 399] x 100
Subtract the new number by the original number
211 - 399 = -188
-188 ÷ 399 = -0.47117794486215536
-0.47117794486215536 x 100 = -47.12%