320.55% is the change from 73 to 307
Calculation steps:
[( 307 - 73 ) ÷ 73] x 100 = 320.55%
Formula
Percentage change = [(307 - 73) / 73] x 100
Subtract the new number by the original number
307 - 73 = 234
234 ÷ 73 = 3.2054794520547945
3.2054794520547945 x 100 = 320.55%