100% is the change from 73 to 146
Calculation steps:
[( 146 - 73 ) ÷ 73] x 100 = 100%
Formula
Percentage change = [(146 - 73) / 73] x 100
Subtract the new number by the original number
146 - 73 = 73
73 ÷ 73 = 1
1 x 100 = 100%
Example