-34.19% is the change from 155 to 102
Calculation steps:
[( 102 - 155 ) ÷ 155] x 100 = -34.19%
Formula
Percentage change = [(102 - 155) / 155] x 100
Subtract the new number by the original number
102 - 155 = -53
-53 ÷ 155 = -0.3419354838709677
-0.3419354838709677 x 100 = -34.19%