20.42% is the change from 142 to 171
Calculation steps:
[( 171 - 142 ) ÷ 142] x 100 = 20.42%
Formula
Percentage change = [(171 - 142) / 142] x 100
Subtract the new number by the original number
171 - 142 = 29
29 ÷ 142 = 0.20422535211267606
0.20422535211267606 x 100 = 20.42%