-6.41% is the change from 78 to 73
Calculation steps:
[( 73 - 78 ) ÷ 78] x 100 = -6.41%
Formula
Percentage change = [(73 - 78) / 78] x 100
Subtract the new number by the original number
73 - 78 = -5
-5 ÷ 78 = -0.0641025641025641
-0.0641025641025641 x 100 = -6.41%