140% is the change from 345 to 828
Calculation steps:
[( 828 - 345 ) ÷ 345] x 100 = 140%
Formula
Percentage change = [(828 - 345) / 345] x 100
Subtract the new number by the original number
828 - 345 = 483
483 ÷ 345 = 1.4
1.4 x 100 = 140%
Example