163.86% is the change from 166 to 438
Calculation steps:
[( 438 - 166 ) ÷ 166] x 100 = 163.86%
Formula
Percentage change = [(438 - 166) / 166] x 100
Subtract the new number by the original number
438 - 166 = 272
272 ÷ 166 = 1.6385542168674698
1.6385542168674698 x 100 = 163.86%