85.54% is the change from 166 to 308
Calculation steps:
[( 308 - 166 ) ÷ 166] x 100 = 85.54%
Formula
Percentage change = [(308 - 166) / 166] x 100
Subtract the new number by the original number
308 - 166 = 142
142 ÷ 166 = 0.8554216867469879
0.8554216867469879 x 100 = 85.54%