-75.69% is the change from 399 to 97
Calculation steps:
[( 97 - 399 ) ÷ 399] x 100 = -75.69%
Formula
Percentage change = [(97 - 399) / 399] x 100
Subtract the new number by the original number
97 - 399 = -302
-302 ÷ 399 = -0.7568922305764411
-0.7568922305764411 x 100 = -75.69%