102.99% is the change from 402 to 816
Calculation steps:
[( 816 - 402 ) ÷ 402] x 100 = 102.99%
Formula
Percentage change = [(816 - 402) / 402] x 100
Subtract the new number by the original number
816 - 402 = 414
414 ÷ 402 = 1.0298507462686568
1.0298507462686568 x 100 = 102.99%