-2.17% is the change from 508 to 497
Calculation steps:
[( 497 - 508 ) ÷ 508] x 100 = -2.17%
Formula
Percentage change = [(497 - 508) / 508] x 100
Subtract the new number by the original number
497 - 508 = -11
-11 ÷ 508 = -0.021653543307086614
-0.021653543307086614 x 100 = -2.17%