81.63% is the change from 490 to 890
Calculation steps:
[( 890 - 490 ) ÷ 490] x 100 = 81.63%
Formula
Percentage change = [(890 - 490) / 490] x 100
Subtract the new number by the original number
890 - 490 = 400
400 ÷ 490 = 0.8163265306122449
0.8163265306122449 x 100 = 81.63%