36.33% is the change from 490 to 668
Calculation steps:
[( 668 - 490 ) ÷ 490] x 100 = 36.33%
Formula
Percentage change = [(668 - 490) / 490] x 100
Subtract the new number by the original number
668 - 490 = 178
178 ÷ 490 = 0.363265306122449
0.363265306122449 x 100 = 36.33%