6.85% is the change from 73 to 78
Calculation steps:
[( 78 - 73 ) ÷ 73] x 100 = 6.85%
Formula
Percentage change = [(78 - 73) / 73] x 100
Subtract the new number by the original number
78 - 73 = 5
5 ÷ 73 = 0.0684931506849315
0.0684931506849315 x 100 = 6.85%