34.47% is the change from 499 to 671
Calculation steps:
[( 671 - 499 ) ÷ 499] x 100 = 34.47%
Formula
Percentage change = [(671 - 499) / 499] x 100
Subtract the new number by the original number
671 - 499 = 172
172 ÷ 499 = 0.34468937875751504
0.34468937875751504 x 100 = 34.47%