-47.27% is the change from 275 to 145
Calculation steps:
[( 145 - 275 ) ÷ 275] x 100 = -47.27%
Formula
Percentage change = [(145 - 275) / 275] x 100
Subtract the new number by the original number
145 - 275 = -130
-130 ÷ 275 = -0.4727272727272727
-0.4727272727272727 x 100 = -47.27%