142.11% is the change from 342 to 828
Calculation steps:
[( 828 - 342 ) ÷ 342] x 100 = 142.11%
Formula
Percentage change = [(828 - 342) / 342] x 100
Subtract the new number by the original number
828 - 342 = 486
486 ÷ 342 = 1.4210526315789473
1.4210526315789473 x 100 = 142.11%