-49.82% is the change from 275 to 138
Calculation steps:
[( 138 - 275 ) ÷ 275] x 100 = -49.82%
Formula
Percentage change = [(138 - 275) / 275] x 100
Subtract the new number by the original number
138 - 275 = -137
-137 ÷ 275 = -0.49818181818181817
-0.49818181818181817 x 100 = -49.82%