8.39% is the change from 143 to 155
Calculation steps:
[( 155 - 143 ) ÷ 143] x 100 = 8.39%
Formula
Percentage change = [(155 - 143) / 143] x 100
Subtract the new number by the original number
155 - 143 = 12
12 ÷ 143 = 0.08391608391608392
0.08391608391608392 x 100 = 8.39%