-2.95% is the change from 508 to 493
Calculation steps:
[( 493 - 508 ) ÷ 508] x 100 = -2.95%
Formula
Percentage change = [(493 - 508) / 508] x 100
Subtract the new number by the original number
493 - 508 = -15
-15 ÷ 508 = -0.02952755905511811
-0.02952755905511811 x 100 = -2.95%