-52.13% is the change from 399 to 191
Calculation steps:
[( 191 - 399 ) ÷ 399] x 100 = -52.13%
Formula
Percentage change = [(191 - 399) / 399] x 100
Subtract the new number by the original number
191 - 399 = -208
-208 ÷ 399 = -0.5213032581453634
-0.5213032581453634 x 100 = -52.13%