56.73% is the change from 490 to 768
Calculation steps:
[( 768 - 490 ) ÷ 490] x 100 = 56.73%
Formula
Percentage change = [(768 - 490) / 490] x 100
Subtract the new number by the original number
768 - 490 = 278
278 ÷ 490 = 0.5673469387755102
0.5673469387755102 x 100 = 56.73%