396.34% is the change from 164 to 814
Calculation steps:
[( 814 - 164 ) ÷ 164] x 100 = 396.34%
Formula
Percentage change = [(814 - 164) / 164] x 100
Subtract the new number by the original number
814 - 164 = 650
650 ÷ 164 = 3.9634146341463414
3.9634146341463414 x 100 = 396.34%