113.4% is the change from 388 to 828
Calculation steps:
[( 828 - 388 ) ÷ 388] x 100 = 113.4%
Formula
Percentage change = [(828 - 388) / 388] x 100
Subtract the new number by the original number
828 - 388 = 440
440 ÷ 388 = 1.134020618556701
1.134020618556701 x 100 = 113.4%