293.9% is the change from 164 to 646
Calculation steps:
[( 646 - 164 ) ÷ 164] x 100 = 293.9%
Formula
Percentage change = [(646 - 164) / 164] x 100
Subtract the new number by the original number
646 - 164 = 482
482 ÷ 164 = 2.9390243902439024
2.9390243902439024 x 100 = 293.9%