-42.47% is the change from 73 to 42
Calculation steps:
[( 42 - 73 ) ÷ 73] x 100 = -42.47%
Formula
Percentage change = [(42 - 73) / 73] x 100
Subtract the new number by the original number
42 - 73 = -31
-31 ÷ 73 = -0.4246575342465753
-0.4246575342465753 x 100 = -42.47%