13.7% is the change from 73 to 83
Calculation steps:
[( 83 - 73 ) ÷ 73] x 100 = 13.7%
Formula
Percentage change = [(83 - 73) / 73] x 100
Subtract the new number by the original number
83 - 73 = 10
10 ÷ 73 = 0.136986301369863
0.136986301369863 x 100 = 13.7%