34.9% is the change from 490 to 661
Calculation steps:
[( 661 - 490 ) ÷ 490] x 100 = 34.9%
Formula
Percentage change = [(661 - 490) / 490] x 100
Subtract the new number by the original number
661 - 490 = 171
171 ÷ 490 = 0.3489795918367347
0.3489795918367347 x 100 = 34.9%