-87.74% is the change from 155 to 19
Calculation steps:
[( 19 - 155 ) ÷ 155] x 100 = -87.74%
Formula
Percentage change = [(19 - 155) / 155] x 100
Subtract the new number by the original number
19 - 155 = -136
-136 ÷ 155 = -0.8774193548387097
-0.8774193548387097 x 100 = -87.74%