81.69% is the change from 508 to 923
Calculation steps:
[( 923 - 508 ) ÷ 508] x 100 = 81.69%
Formula
Percentage change = [(923 - 508) / 508] x 100
Subtract the new number by the original number
923 - 508 = 415
415 ÷ 508 = 0.8169291338582677
0.8169291338582677 x 100 = 81.69%