97.04% is the change from 507 to 999
Calculation steps:
[( 999 - 507 ) ÷ 507] x 100 = 97.04%
Formula
Percentage change = [(999 - 507) / 507] x 100
Subtract the new number by the original number
999 - 507 = 492
492 ÷ 507 = 0.9704142011834319
0.9704142011834319 x 100 = 97.04%