-68.17% is the change from 399 to 127
Calculation steps:
[( 127 - 399 ) ÷ 399] x 100 = -68.17%
Formula
Percentage change = [(127 - 399) / 399] x 100
Subtract the new number by the original number
127 - 399 = -272
-272 ÷ 399 = -0.681704260651629
-0.681704260651629 x 100 = -68.17%