-43.88% is the change from 490 to 275
Calculation steps:
[( 275 - 490 ) ÷ 490] x 100 = -43.88%
Formula
Percentage change = [(275 - 490) / 490] x 100
Subtract the new number by the original number
275 - 490 = -215
-215 ÷ 490 = -0.4387755102040816
-0.4387755102040816 x 100 = -43.88%