308.86% is the change from 158 to 646
Calculation steps:
[( 646 - 158 ) ÷ 158] x 100 = 308.86%
Formula
Percentage change = [(646 - 158) / 158] x 100
Subtract the new number by the original number
646 - 158 = 488
488 ÷ 158 = 3.088607594936709
3.088607594936709 x 100 = 308.86%