289.16% is the change from 166 to 646
Calculation steps:
[( 646 - 166 ) ÷ 166] x 100 = 289.16%
Formula
Percentage change = [(646 - 166) / 166] x 100
Subtract the new number by the original number
646 - 166 = 480
480 ÷ 166 = 2.891566265060241
2.891566265060241 x 100 = 289.16%