36.46% is the change from 491 to 670
Calculation steps:
[( 670 - 491 ) ÷ 491] x 100 = 36.46%
Formula
Percentage change = [(670 - 491) / 491] x 100
Subtract the new number by the original number
670 - 491 = 179
179 ÷ 491 = 0.3645621181262729
0.3645621181262729 x 100 = 36.46%