83% is the change from 500 to 915
Calculation steps:
[( 915 - 500 ) ÷ 500] x 100 = 83%
Formula
Percentage change = [(915 - 500) / 500] x 100
Subtract the new number by the original number
915 - 500 = 415
415 ÷ 500 = 0.83
0.83 x 100 = 83%
Example