-54.68% is the change from 342 to 155
Calculation steps:
[( 155 - 342 ) ÷ 342] x 100 = -54.68%
Formula
Percentage change = [(155 - 342) / 342] x 100
Subtract the new number by the original number
155 - 342 = -187
-187 ÷ 342 = -0.5467836257309941
-0.5467836257309941 x 100 = -54.68%