-52.87% is the change from 261 to 123
Calculation steps:
[( 123 - 261 ) ÷ 261] x 100 = -52.87%
Formula
Percentage change = [(123 - 261) / 261] x 100
Subtract the new number by the original number
123 - 261 = -138
-138 ÷ 261 = -0.5287356321839081
-0.5287356321839081 x 100 = -52.87%