31.17% is the change from 494 to 648
Calculation steps:
[( 648 - 494 ) ÷ 494] x 100 = 31.17%
Formula
Percentage change = [(648 - 494) / 494] x 100
Subtract the new number by the original number
648 - 494 = 154
154 ÷ 494 = 0.3117408906882591
0.3117408906882591 x 100 = 31.17%