-2.52% is the change from 159 to 155
Calculation steps:
[( 155 - 159 ) ÷ 159] x 100 = -2.52%
Formula
Percentage change = [(155 - 159) / 159] x 100
Subtract the new number by the original number
155 - 159 = -4
-4 ÷ 159 = -0.025157232704402517
-0.025157232704402517 x 100 = -2.52%