-48.68% is the change from 491 to 252
Calculation steps:
[( 252 - 491 ) ÷ 491] x 100 = -48.68%
Formula
Percentage change = [(252 - 491) / 491] x 100
Subtract the new number by the original number
252 - 491 = -239
-239 ÷ 491 = -0.48676171079429736
-0.48676171079429736 x 100 = -48.68%