34.14% is the change from 498 to 668
Calculation steps:
[( 668 - 498 ) ÷ 498] x 100 = 34.14%
Formula
Percentage change = [(668 - 498) / 498] x 100
Subtract the new number by the original number
668 - 498 = 170
170 ÷ 498 = 0.3413654618473896
0.3413654618473896 x 100 = 34.14%