-61.15% is the change from 399 to 155
Calculation steps:
[( 155 - 399 ) ÷ 399] x 100 = -61.15%
Formula
Percentage change = [(155 - 399) / 399] x 100
Subtract the new number by the original number
155 - 399 = -244
-244 ÷ 399 = -0.6115288220551378
-0.6115288220551378 x 100 = -61.15%