291.46% is the change from 164 to 642
Calculation steps:
[( 642 - 164 ) ÷ 164] x 100 = 291.46%
Formula
Percentage change = [(642 - 164) / 164] x 100
Subtract the new number by the original number
642 - 164 = 478
478 ÷ 164 = 2.9146341463414633
2.9146341463414633 x 100 = 291.46%