-47.9% is the change from 499 to 260
Calculation steps:
[( 260 - 499 ) ÷ 499] x 100 = -47.9%
Formula
Percentage change = [(260 - 499) / 499] x 100
Subtract the new number by the original number
260 - 499 = -239
-239 ÷ 499 = -0.4789579158316633
-0.4789579158316633 x 100 = -47.9%