81.55% is the change from 168 to 305
Calculation steps:
[( 305 - 168 ) ÷ 168] x 100 = 81.55%
Formula
Percentage change = [(305 - 168) / 168] x 100
Subtract the new number by the original number
305 - 168 = 137
137 ÷ 168 = 0.8154761904761905
0.8154761904761905 x 100 = 81.55%