-54.28% is the change from 339 to 155
Calculation steps:
[( 155 - 339 ) ÷ 339] x 100 = -54.28%
Formula
Percentage change = [(155 - 339) / 339] x 100
Subtract the new number by the original number
155 - 339 = -184
-184 ÷ 339 = -0.5427728613569321
-0.5427728613569321 x 100 = -54.28%