-49.5% is the change from 499 to 252
Calculation steps:
[( 252 - 499 ) ÷ 499] x 100 = -49.5%
Formula
Percentage change = [(252 - 499) / 499] x 100
Subtract the new number by the original number
252 - 499 = -247
-247 ÷ 499 = -0.49498997995991983
-0.49498997995991983 x 100 = -49.5%