91.63% is the change from 490 to 939
Calculation steps:
[( 939 - 490 ) ÷ 490] x 100 = 91.63%
Formula
Percentage change = [(939 - 490) / 490] x 100
Subtract the new number by the original number
939 - 490 = 449
449 ÷ 490 = 0.9163265306122449
0.9163265306122449 x 100 = 91.63%