2.82% is the change from 71 to 73
Calculation steps:
[( 73 - 71 ) ÷ 71] x 100 = 2.82%
Formula
Percentage change = [(73 - 71) / 71] x 100
Subtract the new number by the original number
73 - 71 = 2
2 ÷ 71 = 0.028169014084507043
0.028169014084507043 x 100 = 2.82%