2.74% is the change from 73 to 75
Calculation steps:
[( 75 - 73 ) ÷ 73] x 100 = 2.74%
Formula
Percentage change = [(75 - 73) / 73] x 100
Subtract the new number by the original number
75 - 73 = 2
2 ÷ 73 = 0.0273972602739726
0.0273972602739726 x 100 = 2.74%