-24.31% is the change from 399 to 302
Calculation steps:
[( 302 - 399 ) ÷ 399] x 100 = -24.31%
Formula
Percentage change = [(302 - 399) / 399] x 100
Subtract the new number by the original number
302 - 399 = -97
-97 ÷ 399 = -0.24310776942355888
-0.24310776942355888 x 100 = -24.31%