102.2% is the change from 409 to 827
Calculation steps:
[( 827 - 409 ) ÷ 409] x 100 = 102.2%
Formula
Percentage change = [(827 - 409) / 409] x 100
Subtract the new number by the original number
827 - 409 = 418
418 ÷ 409 = 1.02200488997555
1.02200488997555 x 100 = 102.2%