79.22% is the change from 515 to 923
Calculation steps:
[( 923 - 515 ) ÷ 515] x 100 = 79.22%
Formula
Percentage change = [(923 - 515) / 515] x 100
Subtract the new number by the original number
923 - 515 = 408
408 ÷ 515 = 0.7922330097087379
0.7922330097087379 x 100 = 79.22%