66.33% is the change from 490 to 815
Calculation steps:
[( 815 - 490 ) ÷ 490] x 100 = 66.33%
Formula
Percentage change = [(815 - 490) / 490] x 100
Subtract the new number by the original number
815 - 490 = 325
325 ÷ 490 = 0.6632653061224489
0.6632653061224489 x 100 = 66.33%