-53.09% is the change from 275 to 129
Calculation steps:
[( 129 - 275 ) ÷ 275] x 100 = -53.09%
Formula
Percentage change = [(129 - 275) / 275] x 100
Subtract the new number by the original number
129 - 275 = -146
-146 ÷ 275 = -0.5309090909090909
-0.5309090909090909 x 100 = -53.09%