139.3% is the change from 341 to 816
Calculation steps:
[( 816 - 341 ) ÷ 341] x 100 = 139.3%
Formula
Percentage change = [(816 - 341) / 341] x 100
Subtract the new number by the original number
816 - 341 = 475
475 ÷ 341 = 1.3929618768328447
1.3929618768328447 x 100 = 139.3%