-49.49% is the change from 491 to 248
Calculation steps:
[( 248 - 491 ) ÷ 491] x 100 = -49.49%
Formula
Percentage change = [(248 - 491) / 491] x 100
Subtract the new number by the original number
248 - 491 = -243
-243 ÷ 491 = -0.49490835030549896
-0.49490835030549896 x 100 = -49.49%