-3.69% is the change from 515 to 496
Calculation steps:
[( 496 - 515 ) ÷ 515] x 100 = -3.69%
Formula
Percentage change = [(496 - 515) / 515] x 100
Subtract the new number by the original number
496 - 515 = -19
-19 ÷ 515 = -0.036893203883495145
-0.036893203883495145 x 100 = -3.69%