62.67% is the change from 501 to 815
Calculation steps:
[( 815 - 501 ) ÷ 501] x 100 = 62.67%
Formula
Percentage change = [(815 - 501) / 501] x 100
Subtract the new number by the original number
815 - 501 = 314
314 ÷ 501 = 0.626746506986028
0.626746506986028 x 100 = 62.67%