-76.69% is the change from 399 to 93
Calculation steps:
[( 93 - 399 ) ÷ 399] x 100 = -76.69%
Formula
Percentage change = [(93 - 399) / 399] x 100
Subtract the new number by the original number
93 - 399 = -306
-306 ÷ 399 = -0.7669172932330827
-0.7669172932330827 x 100 = -76.69%