137.72% is the change from 342 to 813
Calculation steps:
[( 813 - 342 ) ÷ 342] x 100 = 137.72%
Formula
Percentage change = [(813 - 342) / 342] x 100
Subtract the new number by the original number
813 - 342 = 471
471 ÷ 342 = 1.3771929824561404
1.3771929824561404 x 100 = 137.72%