-42.99% is the change from 549 to 313
Calculation steps:
[( 313 - 549 ) ÷ 549] x 100 = -42.99%
Formula
Percentage change = [(313 - 549) / 549] x 100
Subtract the new number by the original number
313 - 549 = -236
-236 ÷ 549 = -0.42987249544626593
-0.42987249544626593 x 100 = -42.99%