-82.58% is the change from 155 to 27
Calculation steps:
[( 27 - 155 ) ÷ 155] x 100 = -82.58%
Formula
Percentage change = [(27 - 155) / 155] x 100
Subtract the new number by the original number
27 - 155 = -128
-128 ÷ 155 = -0.8258064516129032
-0.8258064516129032 x 100 = -82.58%