3550% is the change from 2 to 73
Calculation steps:
[( 73 - 2 ) ÷ 2] x 100 = 3550%
Formula
Percentage change = [(73 - 2) / 2] x 100
Subtract the new number by the original number
73 - 2 = 71
71 ÷ 2 = 35.5
35.5 x 100 = 3550%
Example